Yes, I can not extract the program. The L/S/V (Load Store Verify) function from the supervisor menu is how i am trying to upload the program from the PLC to the Workmaster. When i hit control-e to start the process, the process starts, blinks the word busy on the Workmaster screen, flashes com failed at the bottom right of the screen then says process aborted. The program is Logicmaster 1F Version 01.05 for the series one family. My PLC CPU is a Texas Instruments 330-37 model, but its compatible through cross reference with this software and the other connection components i mentioned previous. I suspect the not equal message at the top of the screen is the main obstacle. After i set up the communication from the scratch pad screen when i first start the workmaster, the status at the top right of the workmaster screen changes from no comm to run and the data light on the dcu starts to flash indicating that the cpu and workmaster are communicating. I hope thats makes more sense. I am kind of new to this. Thanks.