Not sure if this will help various people on this thread, but I've had some success by looking carefully at the parms and covb datasets that get outputted and making sure all row and column names are exactly named the same (case sensitive) and I believe at times, I've had to manipulate those data sets even more to make sure reference groups and etc... are what they should be. I vaguely recall at times needing to delete reference group rows that had 0 or missing in the cells?? Be sure things are sorted by _Imputation_ also. At times, I've had to shorten the variable name also. Hope this is somewhat helpful.
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