Mono 2.4.2 is a portable and open source implementation of the .NET framework for Unix, Windows, MacOS and other operating systems.

4 Installing Mono 2.4.2

Major Highlights

Mono 2.4.2 is a bugfix release for Mono 2.4, which is the foundation for Novell's own long-term support Mono-based product.

In addition to bug fixes, this release includes the following major changes from 2.4.0:

We now ship Microsoft's ASP.NET MVC (http://www.asp.net/mvc) stack and ASP.NET MVC applications can run with Mono.
xbuild has been updated
Removed non-free amqp0-8.xml documentation.

Changes in Mono 2.4

XSP now has Silverlight mime types registered.

Updated the browser database.

The C# Shell (csharp) will now accept C# scripts specified on the command line, like:

$ csharp demo.cs

A major bug was fixed for multi-threaded applications using XPath, if you are using XPath in a multithreaded application, we strongly recommend that you upgrade to this version.

Bugs fixed since Mono 2.4

Between Mono 2.4 and Mono 2.4.2, more than 140 bugs were fixed, this is a partial list (since not all bugs had tracking numbers):

315816 (https://bugzilla.novell.com/show_bug.cgi?id=315816) - [Regression] One crippled DLL leads to a failure of a complete website
325464 (https://bugzilla.novell.com/show_bug.cgi?id=325464) - xsd is unable to generate correct classes from certain input files
328036 (https://bugzilla.novell.com/show_bug.cgi?id=328036) - [PATCH]Casting bug with generic collections
342073 (https://bugzilla.novell.com/show_bug.cgi?id=342073) - WebServices default WebForm does not work
345448 (https://bugzilla.novell.com/show_bug.cgi?id=345448) - Default binding name is wrong, when declared in WebServiceBindingAttribute, but not used.
349688 (https://bugzilla.novell.com/show_bug.cgi?id=349688) - SocketFlags.Partial is not implemented correctly in Linux
382589 (https://bugzilla.novell.com/show_bug.cgi?id=382589) - Passing either Decimal.Max or Decimal.Min to a SQL Server 2005 stored procedure that takes a decimal(29,0) results in a SqlException
382589 (https://bugzilla.novell.com/show_bug.cgi?id=382589) - Passing either Decimal.Max or Decimal.Min to a SQL Server 2005 stored procedure that takes a decimal(29,0) results in a SqlException
409583 (https://bugzilla.novell.com/show_bug.cgi?id=409583) - ToString of methods with pointers in their signature is wrong
417398 (https://bugzilla.novell.com/show_bug.cgi?id=417398) - [PATCH] System.Data.DataRowComparer.Default doesn't compare by row contents
421827 (https://bugzilla.novell.com/show_bug.cgi?id=421827) - [PATCH] CookieContainer.GetCookie skips cookie when domain has no leading dot
424908 (https://bugzilla.novell.com/show_bug.cgi?id=424908) - Oracle - stored procedure returning string throws exception - Size must be set
431039 (https://bugzilla.novell.com/show_bug.cgi?id=431039) - First Run of IsolatedStorageFile is not threadsafe
436592 (https://bugzilla.novell.com/show_bug.cgi?id=436592) - Error in the CustomizableFileSettingsProvider.Reset method
449092 (https://bugzilla.novell.com/show_bug.cgi?id=449092) - [Regression] Sockets Novell c# LDAP api, LdapConnection.Disconnect() throws "The socket is not connected" exception
449683 (https://bugzilla.novell.com/show_bug.cgi?id=449683) - MD throws NotImplementedException when parsing DLR project
458916 (https://bugzilla.novell.com/show_bug.cgi?id=458916) - Implemetation errors on Copy.cs
459790 (https://bugzilla.novell.com/show_bug.cgi?id=459790) - SoapRpcMethod based webservices return HTTP 500 error with Mono 2.0.1 Runtime
462947 (https://bugzilla.novell.com/show_bug.cgi?id=462947) - TDS: not enough state reset when executing a query/stored procedure
463011 (https://bugzilla.novell.com/show_bug.cgi?id=463011) - [Regression] Pooled connection is no longer reset
465613 (https://bugzilla.novell.com/show_bug.cgi?id=465613) - HttpWebRequest.BeginGetRequestStream throws ProtocolViolationException
466031 (https://bugzilla.novell.com/show_bug.cgi?id=466031) - Socket.EndReceive buglet
468570 (https://bugzilla.novell.com/show_bug.cgi?id=468570) - Arithmatic overflow in System.Diagnostics.Stopwatch causes Elapsed property to return a negative timespan after the 25'th hour of running
469135 (https://bugzilla.novell.com/show_bug.cgi?id=469135) - Issues with glue-less gtk-sharp running MonoDevelop
470336 (https://bugzilla.novell.com/show_bug.cgi?id=470336) - crash while compiling on SLE_10/ppc
470336 (https://bugzilla.novell.com/show_bug.cgi?id=470336) - crash while compiling on SLE_10/ppc
471305 (https://bugzilla.novell.com/show_bug.cgi?id=471305) - Control lifecycle inconsistency between Mono and MS.NET implementations
471747 (https://bugzilla.novell.com/show_bug.cgi?id=471747) - [FreeBSD x86] Failure of pinvoke2 test
471751 (https://bugzilla.novell.com/show_bug.cgi?id=471751) - [FreeBSD x86] Failure of winx64structs test
475438 (https://bugzilla.novell.com/show_bug.cgi?id=475438) - xbuild dies badly if gmcs not installed
476138 (https://bugzilla.novell.com/show_bug.cgi?id=476138) - Win32 Socket behaviour changed.
476289 (https://bugzilla.novell.com/show_bug.cgi?id=476289) - mod_mono report "(13)Permission denied: Failed to attach to existing dashboard"
477383 (https://bugzilla.novell.com/show_bug.cgi?id=477383) - MaskedTextBox: Backspace doesn't work
477388 (https://bugzilla.novell.com/show_bug.cgi?id=477388) - MaskedTextBox: Delete key deletes masked fields
477395 (https://bugzilla.novell.com/show_bug.cgi?id=477395) - MaskedTextBox: Able to overwrite characters with L mask
477408 (https://bugzilla.novell.com/show_bug.cgi?id=477408) - MaskedTextBox: Doesn't handle invalid input correctly
480377 (https://bugzilla.novell.com/show_bug.cgi?id=480377) - System.Data.OracleClient : DataReader does not support System.TimeSpan
480856 (https://bugzilla.novell.com/show_bug.cgi?id=480856) - xbuild don't recognize Multiple DEFINE
481336 (https://bugzilla.novell.com/show_bug.cgi?id=481336) - xbuild don't compile IronPython.sln
481622 (https://bugzilla.novell.com/show_bug.cgi?id=481622) - Exception when using layout template
481687 (https://bugzilla.novell.com/show_bug.cgi?id=481687) - System.Convert.ChangeType(someIConvertibleObject, typeof(Image) Throws exception on mono. .Net difference
483268 (https://bugzilla.novell.com/show_bug.cgi?id=483268) - Precompiled application can only be solved from original virtual path
483852 (https://bugzilla.novell.com/show_bug.cgi?id=483852) - TypeBuilder should be resolved when used in a generic type instance
484244 (https://bugzilla.novell.com/show_bug.cgi?id=484244) - [Regression] nunit-console.exe requires /noshadow
484294 (https://bugzilla.novell.com/show_bug.cgi?id=484294) - Type.GetMethod does not find methods with nullable parameters when expected
484294 (https://bugzilla.novell.com/show_bug.cgi?id=484294) - Type.GetMethod does not find methods with nullable parameters when expected
484384 (https://bugzilla.novell.com/show_bug.cgi?id=484384) - Duplicate key in assembly resolving
484649 (https://bugzilla.novell.com/show_bug.cgi?id=484649) - Mono.XBuild.CommandLine.LoggerInfo argument parsing is broken
484773 (https://bugzilla.novell.com/show_bug.cgi?id=484773) - WorkingDictionary outside of the project file breaks the build
484795 (https://bugzilla.novell.com/show_bug.cgi?id=484795) - [PATCH]WebClient.UploadValues using UTF-8 encoding and "POST" method do not upload accented characters properly
485377 (https://bugzilla.novell.com/show_bug.cgi?id=485377) - Regression in Convert.ChangeType()
485377 (https://bugzilla.novell.com/show_bug.cgi?id=485377) - Regression in Convert.ChangeType()
485435 (https://bugzilla.novell.com/show_bug.cgi?id=485435) - JSON proxy class generator errors out when any webmethod signature takes a GUID parameter
485458 (https://bugzilla.novell.com/show_bug.cgi?id=485458) - CustomValidator incorrectly requires ControlToValidate to be set for client side scripting to work.
485557 (https://bugzilla.novell.com/show_bug.cgi?id=485557) - Response.ClearHeaders reset HttpCacheability to private
486234 (https://bugzilla.novell.com/show_bug.cgi?id=486234) - System.String.LastIndexOf(string, StringComparison) crashes when using StringComparison.Ordinal on empty strings
486303 (https://bugzilla.novell.com/show_bug.cgi?id=486303) - Type.IsGenericTypeDefinition crashes for user defined Type
486703 (https://bugzilla.novell.com/show_bug.cgi?id=486703) - FtpWebRequest Send PrintWorkingDirectory Command Failed!
486904 (https://bugzilla.novell.com/show_bug.cgi?id=486904) - System.Net.NetworkInformation.Ping throws InvalidOperationException "Process has not been started" on OSX
487155 (https://bugzilla.novell.com/show_bug.cgi?id=487155) - ILASM does not work with octal values in QSTRINGS
487518 (https://bugzilla.novell.com/show_bug.cgi?id=487518) - SIGSEGV in mono_arch_emit_call on amd64; running F# nunit unit tests
487625 (https://bugzilla.novell.com/show_bug.cgi?id=487625) - ExtensionMethodAttribute and CS1685
487659 (https://bugzilla.novell.com/show_bug.cgi?id=487659) - VUL-0: Mono sanbox breakout in IsolatedStorage {}
487758 (https://bugzilla.novell.com/show_bug.cgi?id=487758) - Marshaling a native function pointer to native function call throws assertion
488630 (https://bugzilla.novell.com/show_bug.cgi?id=488630) - mod-mono-server is broken using HTTPS
488670 (https://bugzilla.novell.com/show_bug.cgi?id=488670) - Marshal.GetFunctionPtrFromDelegate crashes the runtime if the delegate signature includes an object type.
488960 (https://bugzilla.novell.com/show_bug.cgi?id=488960) - Invalid CS0663 error with generics ('overloaded function cannot differ on use of parameter modifiers only')
489019 (https://bugzilla.novell.com/show_bug.cgi?id=489019) - mono throwing exception while closing file descriptor 0
489687 (https://bugzilla.novell.com/show_bug.cgi?id=489687) - Code render tag not working
490497 (https://bugzilla.novell.com/show_bug.cgi?id=490497) - "watch for changes to web.config also in the subdirectories" causes problems
490753 (https://bugzilla.novell.com/show_bug.cgi?id=490753) - HtmlInputFile doesn't work on pages with EnableViewState=false
491508 (https://bugzilla.novell.com/show_bug.cgi?id=491508) - SessionSQLServerHandler : InitializeConnection -> NullReferenceException
491531 (https://bugzilla.novell.com/show_bug.cgi?id=491531) - Settings in Web.config not being read
491590 (https://bugzilla.novell.com/show_bug.cgi?id=491590) - The FTPWebRequest class doesn't properly resume file downloads
491828 (https://bugzilla.novell.com/show_bug.cgi?id=491828) - xbuild hides important error information
492252 (https://bugzilla.novell.com/show_bug.cgi?id=492252) - error runing an ASP.net page with validators
492329 (https://bugzilla.novell.com/show_bug.cgi?id=492329) - gmcs generated invalid IL code for storing a new object in a generic out/ref parameters (regression from 2.2).
492666 (https://bugzilla.novell.com/show_bug.cgi?id=492666) - NullReferenceException when binding a list to the ListView
493263 (https://bugzilla.novell.com/show_bug.cgi?id=493263) - Using custom resource provider crashes application
493639 (https://bugzilla.novell.com/show_bug.cgi?id=493639) - Invalid "Bind invocation wasn't formatted properly" in TemplateControlCompiler
493873 (https://bugzilla.novell.com/show_bug.cgi?id=493873) - Multiple assemblies with same type name in precompiled updatable site
493874 (https://bugzilla.novell.com/show_bug.cgi?id=493874) - Missing column in BlogEngine.NET
493887 (https://bugzilla.novell.com/show_bug.cgi?id=493887) - Switch selects wrong branch when default is not last case
494221 (https://bugzilla.novell.com/show_bug.cgi?id=494221) - IL Compiles but generates wrong code
494245 (https://bugzilla.novell.com/show_bug.cgi?id=494245) - ASP.NET Pages not accepting base class with generic type
494567 (https://bugzilla.novell.com/show_bug.cgi?id=494567) - r131501 breaks compilation of System.Windows.Forms_test_net_1_1.dll
495011 (https://bugzilla.novell.com/show_bug.cgi?id=495011) - Application restarts when touching a folder
495112 (https://bugzilla.novell.com/show_bug.cgi?id=495112) - Can't compile cyclic structs with mono-2.4
496758 (https://bugzilla.novell.com/show_bug.cgi?id=496758) - Xsp2 hides internal errors making it difficult to debug tricky web service issues
496905 (https://bugzilla.novell.com/show_bug.cgi?id=496905) - Using Peek() after a short Read() returns -1 instead of trying to read more.
496951 (https://bugzilla.novell.com/show_bug.cgi?id=496951) - The 'NoStore' attribute is not supported by the 'Outputcache' directive.
497174 (https://bugzilla.novell.com/show_bug.cgi?id=497174) - ASP.NET 1.1 is broken with the recent changes made to templateParser.cs
497220 (https://bugzilla.novell.com/show_bug.cgi?id=497220) - assertion in mono_local_regalloc when a local not initialized is used
497715 (https://bugzilla.novell.com/show_bug.cgi?id=497715) - SqlParameter not handling SqlDbType.Xml / DbType.Xml ("No mapping exists ...")
497720 (https://bugzilla.novell.com/show_bug.cgi?id=497720) - System.Collections.Generic.KeyCollection.CopyTo(TKey [] array, int arrayIndex) behaves different on Mono / .NET
497775 (https://bugzilla.novell.com/show_bug.cgi?id=497775) - ASP.NET MVC's Html.TextBox()/etc. do nothing.
497839 (https://bugzilla.novell.com/show_bug.cgi?id=497839) - xbuild don't recognize $(SolutionDir)
498118 (https://bugzilla.novell.com/show_bug.cgi?id=498118) - Revision 131768 breaks UserControls added in web.config
498154 (https://bugzilla.novell.com/show_bug.cgi?id=498154) - Xbuild does not recognize **-Wildcard
498637 (https://bugzilla.novell.com/show_bug.cgi?id=498637) - HTML link tag in ASP.NET MVC render bug
498692 (https://bugzilla.novell.com/show_bug.cgi?id=498692) - many problems cross-building with gcc 4.2.x mingw cross
498853 (https://bugzilla.novell.com/show_bug.cgi?id=498853) - Cannot configure ConsoleTraceListener to use standard error through configuration
499013 (https://bugzilla.novell.com/show_bug.cgi?id=499013) - Appdomain.GetAssemblies() returns assemblies loaded for reflection only, not just for execution. Different behaviour than .NET
499851 (https://bugzilla.novell.com/show_bug.cgi?id=499851) - Need notification for UIA when a PopupButton gains focus
499864 (https://bugzilla.novell.com/show_bug.cgi?id=499864) - Dispose-Method of Mono.Data.SqliteClient.SqliteConnection doesn't close the connection.
499887 (https://bugzilla.novell.com/show_bug.cgi?id=499887) - TabControl.GotFocus event not fired when SelectionIndex is set
500019 (https://bugzilla.novell.com/show_bug.cgi?id=500019) - SSE2 used on system without SSE2
500075 (https://bugzilla.novell.com/show_bug.cgi?id=500075) - <%Page%> Inherits doesn't support C# syntax
500385 (https://bugzilla.novell.com/show_bug.cgi?id=500385) - GetMethod fails to find private methods up the class hierarchy when using BindingFlags.NonPublic
500739 (https://bugzilla.novell.com/show_bug.cgi?id=500739) - Error when accessing anything but default route using system.web.routing
501589 (https://bugzilla.novell.com/show_bug.cgi?id=501589) - XElement Seems to Break
502029 (https://bugzilla.novell.com/show_bug.cgi?id=502029) - DateTimePicker: some children are not accessible by orca
502274 (https://bugzilla.novell.com/show_bug.cgi?id=502274) - HttpConnection does not unbind HttpListenerContext when KeepAlive is true
502555 (https://bugzilla.novell.com/show_bug.cgi?id=502555) - Routing problems related to default parameters
502866 (https://bugzilla.novell.com/show_bug.cgi?id=502866) - UDPClient.Receive does not honor Socket.ReceiveTimeout
503728 (https://bugzilla.novell.com/show_bug.cgi?id=503728) - misused Type.GetInterfaceMap() causes runtime crash
504378 (https://bugzilla.novell.com/show_bug.cgi?id=504378) - Routes in System.Web.Routing don't handle "Variable Number of Segments" correctly (Catchall)
504391 (https://bugzilla.novell.com/show_bug.cgi?id=504391) - WebService.EnableDecompression crash
504411 (https://bugzilla.novell.com/show_bug.cgi?id=504411) - Mprotect fails with ENOMEM in GC_remap
504615 (https://bugzilla.novell.com/show_bug.cgi?id=504615) - [PATCH] Global.asax of precompiled sites not loaded
504667 (https://bugzilla.novell.com/show_bug.cgi?id=504667) - [gmcs] compilation error when using partial static classes
505375 (https://bugzilla.novell.com/show_bug.cgi?id=505375) - JIT does not optimize do-while loop correctly
505678 (https://bugzilla.novell.com/show_bug.cgi?id=505678) - mono.bin crashes for System.Xml.XPath.AxisIterator.MoveNextCore
506144 (https://bugzilla.novell.com/show_bug.cgi?id=506144) - Structs that contain Mono.Simd.Vector4f fields have broken sequential layout
506757 (https://bugzilla.novell.com/show_bug.cgi?id=506757) - CS0507 when overriding public method in class generated by ikvmc
506915 (https://bugzilla.novell.com/show_bug.cgi?id=506915) - Use of tertiary operator results in runtime stack trace but equivalent if/else code does not
507003 (https://bugzilla.novell.com/show_bug.cgi?id=507003) - Error in Assembly.DoAssemblyResolve
507666 (https://bugzilla.novell.com/show_bug.cgi?id=507666) - url-decode failed with encoded shift_jis query
507836 (https://bugzilla.novell.com/show_bug.cgi?id=507836) - ListItem attributes aren't stored in view state
508167 (https://bugzilla.novell.com/show_bug.cgi?id=508167) - RegisterHiddenField should not put a "id" in the input field in 1.1 profile
508389 (https://bugzilla.novell.com/show_bug.cgi?id=508389) - Mono 2.4 crashes due to accessing freed data structures
508538 (https://bugzilla.novell.com/show_bug.cgi?id=508538) - System.Reflection.TargetInvocationException when calling MethodInfo.invoke
508570 (https://bugzilla.novell.com/show_bug.cgi?id=508570) - Generic MVC ViewMasterPage does not respect type
508649 (https://bugzilla.novell.com/show_bug.cgi?id=508649) - 404 not found errors should be displayed even when custom errors are on (and there is no redirect)
508888 (https://bugzilla.novell.com/show_bug.cgi?id=508888) - MonoVS version of mono breaks Graffiti
509069 (https://bugzilla.novell.com/show_bug.cgi?id=509069) - Can't set different handlers for subdirectories
509092 (https://bugzilla.novell.com/show_bug.cgi?id=509092) - 403 errors should be handled specially as well
509163 (https://bugzilla.novell.com/show_bug.cgi?id=509163) - '*' and ':' are not supported in ASP.NET virtual paths
509450 (https://bugzilla.novell.com/show_bug.cgi?id=509450) - Web.config file modification is not detected
509475 (https://bugzilla.novell.com/show_bug.cgi?id=509475) - Unclosed when <customErrors mode="On"/>
509998 (https://bugzilla.novell.com/show_bug.cgi?id=509998) - Web.config changes in subdirectories are not detected
510302 (https://bugzilla.novell.com/show_bug.cgi?id=510302) - Theming asp.net application seems not work
510735 (https://bugzilla.novell.com/show_bug.cgi?id=510735) - Location path is not verified to be a relative path
511414 (https://bugzilla.novell.com/show_bug.cgi?id=511414) - Can't print from winforms
512028 (https://bugzilla.novell.com/show_bug.cgi?id=512028) - [Regression] asp.net framework includetest fails on mono-2.4.2 using xsp2
512037 (https://bugzilla.novell.com/show_bug.cgi?id=512037) - OutputCache directive Location parameter handling is broken
512485 (https://bugzilla.novell.com/show_bug.cgi?id=512485) - [PATCH] deadlock in ReaderWriterLockSlim.EnterWriteLock
512535 (https://bugzilla.novell.com/show_bug.cgi?id=512535) - Can't concatenate Item list error when compiling non-standard project with xbuild
513849 (https://bugzilla.novell.com/show_bug.cgi?id=513849) - HttpListener does not release the specified port by listener prefixes.
513965 (https://bugzilla.novell.com/show_bug.cgi?id=513965) - Please Add IE8.0 to browscap.ini

Installing Mono 2.4.2

Binary Packages and Source Code Downloads:

Source code and pre-compiled packages for Linux, Solaris, 
MacOS X and Windows is available from our web site from 
the Downloads section.

Quick source code installation:

If we have no packages for your platform, installing from 
source code is very simple.

Compile libgdiplus to support System.Drawing:

    $ tar xzf libgdiplus-2.4.2.tar.gz
    $ cd libgdiplus-2.4.2
    $ ./configure
    $ make
    $ make install

Then compile Mono itself:

    $ tar xzf mono-2.4.2.tar.gz
    $ cd mono-2.4.2
    $ ./configure
    $ make
    $ make install

Mono

Release Notes Mono 2.4.2

Table of Contents

Major Highlights

Changes in Mono 2.4

Bugs fixed since Mono 2.4

Installing Mono 2.4.2