[ignored] ver2.01 falls down by selecting Preferences

[micheus]

Snishino, besides the dump info, could you please attach your preferences file please, so we can try to reproduce the error.

You can also try to backup your preferences.txt file and remove it before start v2.0.1. A new one will be created.
If everything go fine, you would make use of Preferences subset to work with both versions (there is some "incompatibility" related to the placement of the windows).
In this case, you save a preferences subset with a different name for each version and then you can recover the settings when you use it. It is not a big deal, but in this moment of transition/test it will help you.