---
layout: releasenotes
title: Mono 1.9.1 Release, April 2008
version: 1.9.1
releasedate: '2008-04-15'
---

Mono 1.9.1 is a minor bugfix release for [Mono 1.9](http://www.go-mono.com/archive/1.9) It is a stable release and an update to [Mono 1.2.6](http://www.go-mono.com/archive/1.2.6) in the [Mono 1.2 series](http://www.go-mono.com/archive/1.2).

All of the changes since 1.2 are documented in the following release notes: [1.2.1](http://www.go-mono.com/archive/1.2.1), [1.2.2](http://www.go-mono.com/archive/1.2.2), [1.2.3](http://www.go-mono.com/archive/1.2.3), [1.2.4](http://www.go-mono.com/archive/1.2.4), [1.2.5](http://www.go-mono.com/archive/1.2.5), [1.2.6](http://www.go-mono.com/archive/1.2.6) and [1.9](http://www.go-mono.com/archive/1.9).

### Major Highlights

Between the release of 1.9 and 1.9.1 more than 15 bugs were fixed.

### Runtime Engine

G_DECL fixes: bnc#375188, bnc#375107

### C# Compiler

Microsoft.CSharp: Emit bodyless getters and setters for abstract properties

### ASP.NET/xsp

Don't output a date header from System.Web, let xsp do it

Bug fixes: #376352, #371581, #379890, #379888, #377904 #363404

### System.XML/System.Web.Services

Fix an issue with Groupwise WSDL (#336739)

### Mono.Mozilla/gluezilla

Support more than one browser widget per application

### Windows.Forms

Finish implementation for EventsTab and PropertiesTab

Fix keyboard layout issue

MenuAPI fixes (bugs #357638, #378721 and #379570)

### System.Design

Cache editor widget instead of creating it each time

Several bugfixes: #374334, #375786, #372264

### Class Libraries

System.Text: Fix possible integer overflow

System.Net.Mail: Fix #366947 for filename handling

## Installing Mono 1.9.1

``` shell
./configure --prefix=/devel
```

**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 [download](/Downloads) section.

**Quick source code installation:**

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

mono:

``` shell
tar xjf mono-1.9.1.tar.bz2
cd mono-1.9.1
./configure
make
make install
```

Then compile libgdiplus:

``` shell
tar xjf libgdiplus-1.9.tar.bz2
cd libgdiplus-1.9
./configure
make
make install
```