Slicer/Slicer — pull request #134 by lassoan (2014-05-22 19:26:35+00:00)
Title: BUG: Added error reporting for scene file writing

The problem was that no error was reported to the user when:
* the scene file (.mrml) saving failed (e.g., because target location was a read-only directory), or
* sceneview thumbnail image saving failed

Not reporting failure of the scene saving can cause data loss and user frustration.