Thank you, renaming the file worked!

When I hover my mouse pointer over Slides on that web page, at the bottom of IE it shows the file name as:

http://video.ch9.ms./sessions/mms/2013/UD-B326_Agerlund.pptx

After I click on Slides, at the File Download->Do you want to open or save this file? prompt, the dialog box shows the file name as UD-B326_Agerlund.zip.

Thanks again for your help Smiley