FIX: potential size_t underflow


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@5189 42a5c34f-2066-0410-bec5-ba365beb4995
FIX: catch singular matrix exception


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@5190 42a5c34f-2066-0410-bec5-ba365beb4995
FIX: catch exception


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@5191 42a5c34f-2066-0410-bec5-ba365beb4995
FIX: catch exception


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@5192 42a5c34f-2066-0410-bec5-ba365beb4995