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: MicroCode studio crashes while typing in code.
Again, this has been happening to several users over the years, there are multiple threads here and over on the Melabs forum.
HenrikOlsson Today, 14:06Threads I find with a 2 minute search are from 2014, 2015, 2016, 2017...