For all you guys needing a quick and dirty solution - I deleted two folders and got it back to work:
- [path-to-your-user-directory]/AppData (it’s a hidden folder)/Local/UiPath
- [path-to-your-user-directory]/AppData (it’s a hidden folder)/Roaming/UiPath
Then start UiPath again.
Attention: this deletes all your settings in UiPath too.