--- layout: releasenotes title: Release Notes Mono 2.10.8.1 version: 2.10.8.1 releasedate: '2011-12-19' ---

Table of contents

## Beta Mono is a portable and open source implementation of the .NET framework for Unix, Windows, MacOS and other operating systems. Mono 2.10.8.1 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 2.10.8.1 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](/docs/about-mono/releases/2.10.8). Mono 2.10.8.1 is a minor update to [Mono 2.10](/docs/about-mono/releases/2.10.0/), [Mono 2.10.1](/docs/about-mono/releases/2.10.1/), [Mono 2.10.2](/docs/about-mono/releases/2.10.2/), [Mono 2.10.3](/docs/about-mono/releases/2.10.3/), [2.10.4](/docs/about-mono/releases/2.10.4/), [2.10.5](/docs/about-mono/releases/2.10.5/), [2.10.6](/docs/about-mono/releases/2.10.6/), and [2.10.7](/docs/about-mono/releases/2.10.7/). ## Differences Between Stable and Beta The difference between the Stable release (2.10.8) and the Beta (2.10.8.1) 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 2.10.8.1 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. ## Changes - 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](/docs/about-mono/releases/2.10.7/) for a full list of Mono changes since the last stable release.