SAP Presentation 2011 error "could not connect to Microsoft excel. To prevent further data corruption, the program must be close.

Hi, I was hoping anyone can share on how I can restore my file ( I am on the trial version), I am unable to open it. It gives me the following error:

Could not connect to Mircosoft excel. To prevent further data corruption, the program must be closed.

Version 6.0.0.0.0

Build 14,0,2,364

Using Windows XP and Office 2010

Any help would be appertiated.

Thanks,

Amos