Clarified the 'Simulation Failure' error message in response to a number of similar questions on the mailing list.
Clarified the 'Simulation Failure' error message in response to a number of similar questions on the mailing list.

git-svn-id: 48f3d5eb0141859d8d7d81547b6bd7b3dde885f8@115 8655a95f-0638-0410-abc2-2f1ed958ef3d

clones/django-evolution