PDF Creator hangs when printing to PDF - intermittent

Some times PDF creator hangs when printing to PDF. It doesn't seem to matter which file or document it is. Machine is Vista x64 with PDF creator 0.9.9.

I have to end the PDF creator task and then run it again, it then starts saving the PDF's from where it stopped last time.

I seem to have a similar problem...have you been able to figure out the solution?  Did anyone respond??