I'm still fighting with this issue and here's where I'm at.

I uninstalled everything PBP, MPASM, Micro Code Studio Plus and several other IDE's I had loaded a long time ago before getting this thing to work (with much help from everyone here on the forum). And life was good up until a week or so ago!

I then reinstalled everything today and finally got the settings worked out on the programmer. So I'm sort of back to square one and looking for ideas. I can load hex files that I created literally 3 weeks ago fine. However, when I try to recompile the pbp file, nothing!

Now when I say nothing, I mean nothing from the board with the chip. The system says that it assembles and compiles fine with no errors. Then it erases the chip, programs and verify's the load and says it programmed successfully, but does nothing.

So, to summarize. Hex file created weeks ago from a pbp file loads and works fine on chip. Exact same pbp file now, assembles, compiles and loads with no errors, but is like it's not on the chip at all. Hmmm???

The one thing I was looking at on the MELabs site: http://www.melabs.com/support/mpasm.htm
was under the xp section trying to figure out what all should be in this path block? What different things should this be point to? Just to Mpasm location, or should it be pointing to other stuff too? Mine was pointing at a whole lot of nothing, so I did at least point it at the folder where Mpasm.exe is located, but that's it right now. And no change to what I posted above.

I'm grabbing at straws here, has anyone else experienced anything like this?