How to not update Studio to latest version? 2018.1.0 issues

If you are connected to Orchestrator, disconnect and try again. Its a known issue that will be fixed in the next update, in a few days. You can also avoid this by not using double click on the xaml file to start it, and Open it from Studio
As for the Robot shortcut, you had a robot shortcut in Start menu, added by default? Beside the Studio one?