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We have a few users testing importing projects from MS Project to Portfolios using the MS Project add-in.  When trying to upload a MS Project plan (.mpp) to Portfolios, users are experiencing an error that I’m not sure how to troubleshoot. 

-General Failure: Unable to update projects with tasks:  Index was out of range. Must be non-negative and less than the size of the collection .

Parameter name: index

 

Anyone have any tips on what could be causing this error? 

 

Thank you,

Sonia Varney

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