Comment 4 for bug 853862

I suspect Matlab is changing the dylib load path to include its own Qt framework, which is superseding the system-level framework installed when bzr runs in a sub-shell. As for why the frameworks are incompatible, I don't know. I build the installer using Qt 4.7.

If anybody can figure out what's wrong here, I'll gladly include the fix, but I don't have time to track this down.