Comment 2 for bug 987641

I did a bit of investigation, here's the exception's stack trace:

GLib.GException: Icon has zero width
  at Gdk.PixbufLoader.Write (System.Byte[] buf, UInt64 count) [0x00000] in <filename unknown>:0
  at Gdk.PixbufLoader.Write (System.Byte[] bytes, UInt32 count) [0x00000] in <filename unknown>:0
  at Gdk.PixbufLoader.LoadFromStream (System.IO.Stream input) [0x00000] in <filename unknown>:0
  at Gdk.PixbufLoader.InitFromStream (System.IO.Stream stream) [0x00000] in <filename unknown>:0
  at Gdk.PixbufLoader..ctor (System.IO.Stream stream) [0x00000] in <filename unknown>:0
  at Gdk.Pixbuf..ctor (System.IO.Stream stream) [0x00000] in <filename unknown>:0
  at Pinta.Core.GdkPixbufFormat.Import (System.String fileName) [0x00009] in /home/cameron/code/Pinta/Pinta.Core/ImageFormats/GdkPixbufFormat.cs:49
  at Pinta.Core.WorkspaceManager.OpenFile (System.String file) [0x00013] in /home/cameron/code/Pinta/Pinta.Core/Managers/WorkspaceManager.cs:181