I would guess that the problem lies more in the Stazi-like control XP
enforces over the I/O ports on your machine.  Have you checked
Microchip's website to see if they have any input on the matter?

Mike H.

PS-
http://www.microchip.com/download/tools/picmicro/devenv/v570/mp57full.zip

>Does anyone have an old version of MPLAB that they could give me a link to?
>I installed windows XP on my laptop, as Win 98 was getting really flakey.
>Then I upgraded to mplab version 6.30. Now I can't communicate with my
>picstart plus. I have verified the programmer and cable on another system.
>I
>want to go back to an older version of mplab to see if that would help.
>
>Thanks,
>
>Joe

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