[Sorry if this has come up before -- I haven't been reading the digest very carefully] I thought I wanted to play with some of the C language compilers and at least one suggested upgrading to the latest MPLAB. I got 6.40 (to replace 6.12, I think) and installed it. It wouldn't load any of my old project files which were on a network drive. It doesn't give an error, it just doesn't do much of anything when you try 'open project'. If I moved them to a local drive it would open them but they were broken because all the file paths are hardcoded. You can't hand-edit the file paths becuase then the magic number won't match and you're back to silent fail to open. Opening and closing projects regularly crashes MPLAB. I think this (and the above) are probably all due to the new "version control" feature. If you fix your projects you can't roll back to 6.12 because the version of the project file has changed (0.9 to 1.0 I think). I haven't tried, this is just a guess. I'd swear that flashing via ICSP with the WARP13 is muuuch slower now, but since I lost all my project files I don't know what settings I might have forgotten to tweak (eg I don't know what my old 'max addr to flash' was set to). The verify progress bar doesn't update the program counter so it claims to be verifying from 0x0 over and over. Sometimes this fails with 'timeouts' at high, nonexistant addresses. -- Ben Jackson http://www.ben.com/ -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads