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I'm debugging a call to a Stored Procedure in SSMS (2012). Frequently, and various random points in the code, a dialog pops up:

Microsoft SQL Server Management Studio:
Unable to Step. Invalid Operation.

Once I dismiss the dialog, it appears that debugging CAN continue... I can continue to step through the code to the end, without any apparent problems. So far....

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Did you ever find a solution to this? –  IanW Mar 28 '13 at 18:23
    
@IanW I'm afraid I didn't find a solution at the time, and I've actually moved on from that role now. –  CJM Mar 28 '13 at 18:57

1 Answer 1

I had the same problem. After some searching I found this page which suggest that this caused by a race condition. Although the workaround given there wasn't applicable for me, after stopping every other debugging process (Visual Studio) these annoying error messages didn't show up anymore.

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