I want to re-hash this issue: http://www.solspace.com/forums/viewthread/17419/
The error is:
Error Number: 1052 Column 'field_id_90' in field list is ambiguous
It seems there was never a proper solution and I'm having the same issue. I can confirm (at least in my testing) that the issue is related to Matrix fields given a relevant value in Super Search.
I’m running EE 2.7.2, SS 2.1.3 and Matrix 2.5.8.
My two matrix fields are: