sorry if this is being reposted, but the list has returned it to me twice, stating that a similar message has been posted, and it wasn't this one, afaik. Has anyone been using the latest MPLAB? i installed it, but not in the default C:\MPLAB directory. when i try to do the single source example in TUTOR.PDF, i get a 'can't find SAMPLE.HEX' type error after trying to build the project. if i open SAMPLE.ASM and attempt to assemble it, it says it can't find an open file of the proper name. i'm new to PICs, and while the IDE seems like a useful tool, it is quite a bit different from the 80xx tools i'm using, and i don't want to spend a lot of time playing with an apparent beta level tool when the DOS MPASM and MPSIM with PFE will get the job done. thanks for the input bowman