Two things to consider:
1. If you are talking about AA8.0.0, then update (in order) to the latest version. (I think it took at least 8.1.2 for X64)
2. Try printing to the Adobe PDF printer.
Do you have the software loaded where 32-bit software is supposed to be deposited? Is your version of Word 32-bit or 64-bit? Can you create pdfs from any software?
The information found in this link helped me to resolve the problem in minutes:
Please let others know how you fixed your problems - the more possible solutions the more uptime!