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: I/O Pin status during startup
Simple answer- you cannot do that.
Jerson Today, 02:57You should design your project with active low outputs to account for the High-Z input state at power on. Almost every microcontroller, I know, behaves...