Comment 6 for bug 438805

Reinstating this ; it just defers the problem until you try to do an update, then you have the error ;

bzr: ERROR: exceptions.ValueError: A request was made for key: ('sha1:2d3e0631c180d90eda84abae5273e1237e73cdd5',), but that content is not available, and the calling code does not handle if it is missing.