# tg_resolve_events (CIAO 3.4): The following error occurred 10000 times:
        dsTREUNKNOWNINCOLERR -- WARNING: Not loading data from
			        unrecognized level 1.5 input column.

The message merely indicates that the tool encountered a data column that it does not recognize as a standard input column and is therefore ignoring the data from that column when reading the input file. Users who has applied the ACIS time-dependent gain correction will see this warning because of the PHA_RO column that is created in the corrected level=1 event file. This column is not used by any tools after acis_process_events, so the warning may be safely ignored.