Sudden systematic crash of SW when saving sheet metal part .prt as DXF. Never happened before. Have version 2017, sp05

I do a lot of sheet metal exports from parts to DXF without problem. Since a Week or so get systematic crash of SW,  Never happened before.

Have version 2017, no change in environment, machine or so. Tried to install latest SP05, did not improve.

Does someone have an idea…? Thanks !

SolidworksImport/export