Unrecognised disk image for Office 2011 download

[Scylax]

I bought Office 2011 for mac from a reputable academic download company. I downloaded the file today and tried to launch the disk image, but when I do I just get a message that it couldn't be launched because it is 'unrecognised'. Why? I did a Yahoo search but couldn't find an answer. Would some bright spark amongst you please come to my aid?

I am using a new MBA running Snow Leopard, if that makes a difference.

Thanks in advance!

 

[MisterMe]

The solution is to redownload the .dmg file.