Hi, all of you. I've finally found a solution to this problem by myself. Since probably many people will stumble upon this, I think it is better to somehow register it.
The problem seems to be in System.Drawing. When you try to launch an application using WinForms, it crashes with: == Unhandled exception ...snip... Missing dll: /tmp/install/lib/libgdiplus.so == This is particularly confusing on Windows, where one would think this file should be already present. The key to this problem is already in the Xamarin bugtrack system, bug 8309: https://bugzilla.xamarin.com/show_bug.cgi?id=8309 The problem seems to be related to the following two lines in the file $INSTDIR\etc\mono\config: == <dllmap dll="ggdiplus" target="/tmp/install/lib/libgdiplus.so" /> <dllmap dll="ggdiplus.dll" target="/tmp/install/lib/libgdiplus.so" /> == Being INSTDIR the installation directory of mono. Note that this happens in Windows, maybe that "etc" could be confusing, but it is just a subdirectory of the mono installation. Removing both lines immediately solves the problem. == Because bugs happen :) Locate $mono-prefix/etc/mono/config and add an os="!windows" attribute to all gdiplus & gdi32 DLL mapps. == Thanks Robert. I found the solution just before reading your message. I suppose I've been more taxative. This bug invalidates the use of this version of Mono for any final user trying to run an application employing WinForms, and there are quite a lot out there. An yep, bugs happen. However, the bug was found in 11/2012 (mono 3.0.1), and bug 14586, a duplicate of this bug, was (re-)found in 09/2013. Currently, in 4/2014 (mono-3.2.3), the bug has not still been solved, while the fix seems just to add an os="!windows" attribute to those lines. I understand that WinForms is not a valuable asset for Xamarin, but this seems strange anyway. -- Baltasar
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