Need help!!

Hi, I have installed PDF Creator 0.8.0 in my office computer. I am tryingt to pring a Word 2007 file into PDF format. However, it always gives me two pages: the first page is blank and the second page has some information like this:

ERROR: undefined
OFFENDING COMMAND: ??
STACK:

Does anybody have any clue to sovle this problem?

Thank you!