Release Notes Mono

Release date: 19 Dec 2011

Table of contents


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

Mono is a beta release and update to the Mono 2.10.7 Beta, which was used mostly as a vehicle to test the upcoming Gtk+ stack on MacOS X. Mono fixes stability and packaging issues with 2.10.7 and was released as a beta for MacOS X on December 19, 2011.

If you want a stable release, use Mono Release Notes Mono 2.10.8.

Mono is a minor update to Mono 2.10, Mono 2.10.1, Mono 2.10.2, Mono 2.10.3, 2.10.4, 2.10.5, 2.10.6, and 2.10.7.

Differences Between Stable and Beta

The difference between the Stable release (2.10.8) and the Beta ( is that the Beta ships with an updated Gtk+ stack that has been developed with Lanedo to bring many bug fixes to Gtk+ on MacOS X.

The release is a MacOS-only release.

MacOS Updates

This release bundles the new version of Gtk+ 2 that has been fine tuned for MacOS X and fixes hundreds of problems that have been reported by users of MonoDevelop on Mac. In addition, it adds support for Lion’s Smooth Scrolling.


  • Revert Pango to 1.28.4 to resolve a crash when opening the MonoDevelop about box on Snow Leopard.
  • Fix a libgdiplus issue that had forced linking against Apple’s X11 stack for text rendering.
  • Fix issue where a native crash causes MonoDevelop to hang and neither Force Quit nor kill -9 would terminate it (Xamarin #2548).
  • Fix sgen failing with Assertion at sgen-gc.c:2506, condition `mono_sgen_need_bridge_processing ()’ not met.

See the Mono 2.10.7 release notes for a full list of Mono changes since the last stable release.