>a client recently installed foxit pdf viewer. Now when one of the users prints a form from our application to pdf and saves the file our application will sometimes crash like the default directory has been reset. Anyone experienced this?

It happens with many printer drivers that save to a file. The Microsoft Imaging and the XPS printer driver both do the same. Always save the current directory before printing and restore it afterwards. That should go along with the code to rest the FPU with _fpreset.