Logicmaster is GE's name for their old programming software. There was Logicmaster One for the Series One PLC, Logicmaster Six for the Series Six PLC, Logicmaster Five for the Series Five PLC, Logicmaster 90 for the the 90-30 and 90-70 PLCs.
The originator of this thread had a problem with version 9.05 of Logicmaster 90. From your question I can't be sure if you have version 5.0 of one of the Logicmaster software packages or if you have a Series Five PLC.