PowerPivot for Excel 2013 errors after October update KB 2825655

(Updated Dec 2013) After installing the October 2013 update (KB 2825655) for Excel 2013,  PowerPivot is unable to be used. Examples of errors you will receive when trying to work within existing PowerPivot workbooks or launching the PowerPivot Window to create a new one are below. ERRORS:  "We couldn't get data from the Data Model. Here's the…

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Updated! Excel 2013 crashes when you attempt to scroll down the page

Hello everyone We have seen several reports of Excel crashing when you scroll down, even on a brand-new sheet. The Application Event log points to a crash in OSF.dll. We have found that at least one cause of this particular crash is a conflict with Avast! Antivirus. Essentially, if you install Avast! and then open any…

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