PowerPoint files not showing in Share Previwer

[invantix]

When I go to the Document Library in of a site in Alfresco Share and click on a PowerPoint document title/link the document details window appears but the previewer just shows a spinning arrow continuously.  The file never loads in the previewer.  PDF, word docs, Excel files all show up fine.
BTW, I am using Enterprise 3 SP1.

[mikeh]

In my experience, PowerPoint files take a loooong time to be transformed by OpenOffice.org.

One option is to turn up logging on the transformer:

log4j.logger.org.alfresco.repo.content.transform=debug‍

Mike