What is the AllItems.zip file?

Hi,

I just installed a new Project Server 2010. When I click on the "Data Connections" link in the navigation pane ofBusiness Intelligence Center, the system asks me to download a "AllItems.zip" file.

If I click OK and then I try to unzip the file, I get the error: "Cannot open file: it does not appear to be a valid archive".

What is thisAllItems.zip file?

Thanks