RobotStudio 2021.1.2 Crashing

The most recent version of RobotStudio has been crashing when I try to take a real controller offline. Installation Manager 6 also crashes upon opening while IM7 works fine.

Does anyone have similar issues and solutions?
Where can I find legacy versions of software (i.e. Robotstudio 2020)? I have been unable to find it on the ABB RobotStudio downloads page.