Bug#575239:

[Yorik van Havre]

I think this crash occured because FreeCAD (from testing repository)
is using coin 3.0 (libcoin60) while SoQt4 (from lenny repository) uses coin
2.0 (libsoqt4-20)
Check the dependencies of your libsoqt4-20. If it shows "libcoin40" that's
the problem.
Both must use the same version of libcoin, so you must probably use soqt
from testing too, if possible.

Cheers
Yorik
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