Upgraded from 2010 to 2013 - Powerpivot that worked before no longer works properly

[booyaad]

Hi all just wondering if anyone else has experienced this.

I have a PowerPivot file I created in 2010. Worked as expected.

Last week I upgraded to office pro 2013...And therefore had to upgrade all of the PowerPivot files I have had generated thus far.

I had no issues with all of them except for one.

Whenever I try to do a refresh it never returns, there's no error - nothing it just runs saying reading data but nothing happens. Eventually I have to kill the excel file, Like I said this file refreshed without issue in 2010.

Has anyone else had this issue and was able to resolve this?
Any info would be appreciated

thanks

[mikeTRON]

Can you manually refresh each data source individually? I would start by deleting all but one then refreshing. If it works, then close without saving and try another until you isolate the datasource.

Or if the model is relatively simple, I would just rebuild it and be done with it... whichever you think is faster from the get go.