Darrell, I'm sorry you've uninstalled MPLABX because I'm still struggling with it and have nowhere else to turn!

I know I should give up but I'm stubborn.

Anyway, I found that one of my projects with a 16F886 just wouldn't connect and simulate in Proteus. But it WILL connect and simulate if I change the chip to a 16F876A (of course, to do so I change the chip in Proteus, the MPLABX project settings, and the necessary minor code changes in the PBP source file). Both versions of the project work fine in MPLAB 8.x, but in MPLABX I just won't get the 886 project to connect to Proteus and simulate. Interestingly, if I load the resultant .hex file directly into the Proteus processor properties, it simulates from within Proteus, so PBP is correctly compiling...but MPLABX can't connect to or control Proteus.

Now why would the processor change have that effect?