Been using PBP 2.50 on W XP for a long time. Just getting started again with PBP3 on W 10 and I am unable to fix this darn 'unable to execute mpasmwin' problem. Think I've tried all the suggestions here including the PATH variable in Windows but no joy. Anyone successful with this configuration? Still using MPLAB 8.15.

I tried MPASMX but after severe hair loss I gave up on that.

Any thoughts?

Thanks