@mariaclaudia:
In the first tab on the top right side, the 2 fields say "ERROR: UNSUPPORTED COLUMN NAME". That is the error. It cannot be invalid, even if it is inactive. Put "author" or "title" or any valid column name in both of those fields.
Also, ensure you are on the latest version of MCS, which is 1.0.64.
DaltonST
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