Batch processing doesn't work with Excel

Good day,

I have the following Problem on a system running Windows 7 64-bit and Excel 2007.

Creating a PDF out of Excel directly works with no problem. If I try to do the same with the PDF GUI I receive an error. Saddly the error says absolutely nothing. It's just a "Microsoft Visual Basic" Window with an exclamation mark. I can press "OK" or "Help" but then Excel crashes.

The problem is that I can't do any batch processing with Excel Files atm.

It's a new installation from Windows 7 and PDF Creator.

Help is much appreciated,

Chris