I get this error with some Model 2 roms, i had try to disable TROUBLESHOOTER via ROCKETLAUNCHER (check box) but didnt works (but its another question)
This error create some problem during the launch of the FRONT-END, because loose the focus from the main window.
I found a extra "|" inside m2roms.lst in this selected rom (but cant solve the issue)
Test with Model 1.0 and 1.1a