Help! ppt2003 & acrobat 6.0 pro

[xyz]

My Adobe Acrobat 6.0 pro freezes when I try to make a .pdf file out of a
PowerPoint document.
It goes along OK on the progress bar, but just hangs at the end.
I can convert other non-PPT files.
It was working, but stopped after I installed Photoshop elements.
I uninstalled and re-installed acrobat pro and powerpoint, but no luck.

This is Acrobat 6.0 pro and PPT2003pro.
I saw a post somewhere they are not compatible?
But it was working.

Any ideas?
Thanks in advance.

DS