User blog comment:Dchan250/Winmugen V.S Mugen 1.0/@comment-28740159-20130505213026/@comment-3495717-20130505220457

Indeed. MUGEN 1.0 runs a pre-1.0 character in Winmugen compatibility mode, as seen when reading the debug flood. The only reason a pre-1.0 character I had cased an error was because it was using three axis values.