OSX: Acrobat C Distiller crash as soon as some .ps file is already in the monitored folder.

OSX: Acrobat C Distiller crash as soon as some .ps file is already in the monitored folder. If there is no .ps file in the "watched folder" Distiller starts without any problems and is active. I can drop an .ps file in "watched folder" and Distiller creates an .pdf file.