>
> Yes.
>
> You cannot get two instances of MPLAB to run.
> "Lock violation".
>
> You can't even get two different versions to INSTALL.
> They stomp on each others registry entries. (5 vs 6  since I wanted ICD
and ICD2
> at the same time).
>

I use a dual monitor system and I can put MPLAB     v5.70 on one
monitor MPLAB v7.31 on the other.  This doesn't serve any useful
purpose but I tried it just to see if it would work and it does.  My dual
monitor system works very well for debugging using MPLAB v7.31

CR

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