Unhandled Exception: System.InvalidOperationException: Could not read add-in description
  at Mono.Addins.Addin.get_Description () [0x00000] 
  at Mono.Addins.AddinSessionService.CheckHostAssembly (System.Reflection.Assembly asm) [0x00000] 
  at Mono.Addins.AddinSessionService.ActivateRoots () [0x00000] 
  at Mono.Addins.AddinSessionService.Initialize () [0x00000] 
  at Mono.Addins.AddinManager.Initialize (System.String configDir) [0x00000] 
  at Do.Core.PluginManager.Initialize () [0x00000] 
  at Do.Do.Main (System.String[] args) [0x00000]