If you are installing from the blue disc, you shouldn't have any problems.
But remember to right-click the install program and "Run As Administrator".
If you are installing from an older Black and White disc, there are a few extra steps to follow.
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Re: PBP and IDE/programmer
I hope you do not have many MPLABX version installed. Normaly they shouls co-exist but could also mess up things. Better be safe and uninstall all other version except 5.35 that works with the latest...
Ioannis Today, 17:48