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: Oscillator setup
Greetings,
PaulMaker Today, 07:48HenrikOlsson and tumbleweed thank you so much for your help.
I think I have a better understanding of these settings with your help.
I also found this:
8-bit PIC® MCU Clock...