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Opening pbix files or Editing updating SQL Query with October release Desktop PBI (or MS Store Desktop PBI) throws exception and blocks any other changes. (Other than starting from scratch)
Exception: An unexpected error occurred (file 'tmmdmodeltm.cpp', line 5980, function 'MDModelTM::GenBaseTableQuery').
When starting from scratch - initial connection and updated datamodel works, but adding prior calculated DAX columns (via cut and paste) will throw same exception on validation of some: e.g.:
Install Result = VAR r = Sessions[result] RETURN SWITCH(r, "long-name-value1", "value1", r)
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