Tom,
Thanks so much for your help!
I compared the settings as you instructed and there are differences in the "arguments" string as follows:
CW 3 (argument) Example Project
%targetFilePath -W -Prod=P&E_FCS.ini -instance=p&e_FCS
CW 5 (argument) New Project
%targetFilePath -Prod=MON08_P&E_Multilink_CyclonePro.ini -instance=p&emon08probe
I copied and pasted the string from the CW 3 project to the CW 5 project and reran the compiler and debugger.
The CW 5 debugger asked a few questions to select the communications link and MPU Part Number. After I did that, I still received the same message for the communications failure. If you want I can email the screen shots.
Thanks,
David