FIX: catch exception


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@4988 42a5c34f-2066-0410-bec5-ba365beb4995
FIX: time of check/time of use - mkdir() need not have stat() before it.


git-svn-id: https://www.nitrc.org/svn/cmtk/trunk@4989 42a5c34f-2066-0410-bec5-ba365beb4995