Great.   I used regedit to clear out those variables from the registry and re-installed and restarted and it is now working fine. 

Thanks much,

Brian Steward

Installed OpenModelica 1.6.0 on a WinXP machine, and am get an error window popping up when I try to start OMNotebook, OMShell, or OMEdit.  In the error window, it reads

Unable to find OMC, searched in:

C:\OpenModelica1.4.4\\bin\
C:\OpenModelica1.4.4\
C:/OpenModelica1.6.0/tmp

OpenModelica1.4.4 was installed on the machine, but I have uninstalled and then reinstalled OM1.6.0, problem persists.

Suggestions??