Hi Damien!
It sounds like you're trying to remove a specific version of Storyline 360 from the desktop launcher! Happy to help with this!
If you select the downward-facing arrow next to the 'Open' button, you can uninstall that specific application from the desktop window.
However, users should be able to have both versions installed simultaneously without running into the errors you mentioned. As an initial troubleshooting step, I suggest clearing the cache of the desktop app to see if that improves the behavior. If you're still running into trouble, please connect with our support engineers through a support case.
They'd be happy to continue troubleshooting with you!
