Error: Powerpoint control not activated

Help!

I just purchased Xcelsius 2008 last week. Is it safe to assume that SP1 was included in the new download?

I created an xcelsius presentation on my home computer and converted to powerpoint and it worked fine. When I opened the file on my work computer I get the following error message:

"Some controls on this presentation can't be activated. They might not be registered on this computer." It must be something with my home computer because I downloaded a sample .ppt from the website and it opens fine on my work computer.

I have to give a presentation on Wednesday and I would appreciate some help quickly.

Thanks.