Yes, that's weird. When I work in a project, I separate my scenes in several projects to reduce the risk of loosing my work entirely. This makes me switching among iClone projects very often. I recently discovered, if I leave my computer for 5 minutes and my monitor goes black to save energy, then I return to restore the visual and try to switch the project or create a new one, iClone got stuck and I have to force closing it killing the task. Luckily so far it hasn't messed up my projects, but I think it is something important to check. Meanwhile I had to configure my monitor to keep it on all the time, even it's not the best practice.