FIX: throw proper exception


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@4951 42a5c34f-2066-0410-bec5-ba365beb4995
DOC


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@4952 42a5c34f-2066-0410-bec5-ba365beb4995
FIX: catch matrix exception


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@4953 42a5c34f-2066-0410-bec5-ba365beb4995