Hi Keith,
Sorry to hear it's not working for you. I'm using the latest version of MPLAB, v7.42 and the PICStart version is 4.40.01. Do you get the same result as before, even with the resistor/cap? Still can't even erase/blank check it?

Is it on a 2431 or are you trying with the 4431?

When I flashed the 2431 with the MicroCodeLoader .hex file I had to change the config for the brown out voltage. Apparently the BOD was set to on but the trip voltage wasn't specified so it complained about that. Other than that it programed and verified without further problems.

I've searched the docs further but beyond the resistor and/or cap "solution" I haven't found anything. It'll be interesting to here what Microchip says.

/Henrik Olsson.