I have used PDFC for quite some time and love it.
I have been running on 0.9.9 for some time. I recently tried upgrading 1.02 and although the program appears to work as intended in manual mode, it appears a bug may have been introduced. I tried 1.0.2 and 1.0.1 and finally had to go back to 0.9.9.
The bug has to do with starting PDFC within Excel v2003 via VBA.
I use the following line of code:
Set pdfjob = New PDFCreator.clsPDFCreator
In 0.9.9, this correctly opens the software. In later versions, I get an error saying PDFC cannot be opened.