Hi again... Well, I'v now istalled IE5.5 and re-run the installation prog for MPLAB 6.10. All seems to be OK, but it's not bug-free (the *installation*, that is). The installation goes to "\Program\MPLAB IDE\..." but the shortcut on the desktop points to "\Program\MPLAB IDE_V6\..." and have to be adjusted. (The earlier version om MPLAB V6 installed to the _V6\... directory, b.t.w.) Anyway, efter adjusting the shortcut, I could open my project from the former V6 kit and build it OK. Jan-Erik Svderholm. S:t Anna Data Sweden -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads