Description of problem:
Follow-up to BZ 1197030. Same problem, just one more file type that hasn't been covered by the previous fix.

Version-Release number of selected component (if applicable):
6.1.0.CR1

How reproducible:
-

Steps to Reproduce:
1. Create new Guided Score Card in Project Authoring perspective.
2. Leave it open, switch to Administration, delete repository containing the created score card.
3. Return to Project authoring, try closing the score card, try to switch to a different perspective.

Actual results:
Score card cannot be closed. Impossible to change to a different perspective.

Expected results:
Score card editor can be closed, perspective can be changed.

Additional info: