DraftSight for Mac printing issues

Downloaded DraftSight Beta for Mac OX 10.6.6 (MacBook Pro) and the program crashed a few times during print to pdf. Now the preview on the left in print mode is a blank white area and when printing the image is the black model space screen image. Restarting the program or restarting the OX system hasn't fixed this.  Has anyone else experienced this?

Thanks

MC