$ sudo make uninstall
Making uninstall in sources
make[1]: Entering directory `/home/knocte/Documents/Code/OpenSource/gstreamer-sharp/sources'
echo "/usr/bin/gacutil /u gstreamer-sharp /package gstreamer-sharp /root /usr/lib"; \
        /usr/bin/gacutil /u gstreamer-sharp /package gstreamer-sharp /root /usr/lib || exit 1;
/usr/bin/gacutil /u gstreamer-sharp /package gstreamer-sharp /root /usr/lib
Assembly: gstreamer-sharp, Version=0.9.3.0, Culture=neutral, PublicKeyToken=4956b48baf980190
Cleaning package directory, it is empty.
Uninstalled: gstreamer-sharp, Version=0.9.3.0, Culture=neutral, PublicKeyToken=4956b48baf980190
Assembly: gstreamer-sharp, Version=0.99.0.0, Culture=neutral, PublicKeyToken=5cbf79803e97ff61

Unhandled Exception:
System.IO.DirectoryNotFoundException: Directory '/usr/lib/mono/gstreamer-sharp' not found.
  at System.IO.Directory.ValidateDirectoryListing (System.String path, System.String searchPattern, System.Boolean& stop) [0x00000] in <filename unknown>:0 
  at System.IO.Directory.GetFileSystemEntries (System.String path, System.String searchPattern, FileAttributes mask, FileAttributes attrs) [0x00000] in <filename unknown>:0 
  at System.IO.Directory.GetFiles (System.String path, System.String searchPattern) [0x00000] in <filename unknown>:0 
  at System.IO.Directory.GetFiles (System.String path) [0x00000] in <filename unknown>:0 
  at Mono.Tools.Driver.Uninstall (System.String name, System.String package, System.String gacdir, System.String libdir, Boolean listMode, System.Int32& uninstalled, System.Int32& failures) [0x00000] in <filename unknown>:0 
  at Mono.Tools.Driver.Main (System.String[] args) [0x00000] in <filename unknown>:0 
[ERROR] FATAL UNHANDLED EXCEPTION: System.IO.DirectoryNotFoundException: Directory '/usr/lib/mono/gstreamer-sharp' not found.
  at System.IO.Directory.ValidateDirectoryListing (System.String path, System.String searchPattern, System.Boolean& stop) [0x00000] in <filename unknown>:0 
  at System.IO.Directory.GetFileSystemEntries (System.String path, System.String searchPattern, FileAttributes mask, FileAttributes attrs) [0x00000] in <filename unknown>:0 
  at System.IO.Directory.GetFiles (System.String path, System.String searchPattern) [0x00000] in <filename unknown>:0 
  at System.IO.Directory.GetFiles (System.String path) [0x00000] in <filename unknown>:0 
  at Mono.Tools.Driver.Uninstall (System.String name, System.String package, System.String gacdir, System.String libdir, Boolean listMode, System.Int32& uninstalled, System.Int32& failures) [0x00000] in <filename unknown>:0 
  at Mono.Tools.Driver.Main (System.String[] args) [0x00000] in <filename unknown>:0 
make[1]: *** [uninstall-local] Error 1
make[1]: Leaving directory `/home/knocte/Documents/Code/OpenSource/gstreamer-sharp/sources'
make: *** [uninstall-recursive] Error 1
knocte@ulises:~/Documents/Code/OpenSource/gstreamer-sharp$