ES> %GISBASE%\bin ES> C:\WINDOWS\system32 ES> C:\WINDOWS\system ES> C:\WINDOWS ES> %APPDATA%\.. ES> %GISBASE%\bin ES> %GISBASE%\lib ES> %APPDATA%\GRASS6\addons (In my case this path does not exist.) ES> %GISBASE%\bin ES> %GISBASE%\extrabin HK> Glad to see that you've found the interfering dll Or an incorrect search procedure? e.