Upgraded to CC5 full version (from trial) yesterday and have been experimenting with various features.
Both yesterday and today the program hangs, becomes unresponsive (though, not in the same way that Windows apps become grey and unresponsive and Windows suggests to close them - it became just unresponsive internally - see the screenshots attached).

I can't quite recall the workflow that made it unresponsive yesterday - I think I was applying skin texture templates.

Today it also happened with applying skin:
1- Apply a skin template and look around
2- Then apply another skin template
3- You see two different 'modal' windows (see screenshots) but the x close button is not active on one, and the other with progress bar is hidden behind this one and does not move at all even after waiting for a long time. The entire app is unresponsive. Esc key, mouse clicks, etc - nothing works except End Task from Task Manager.

I've attached an image of my Task Manager showing no activity on the app. You can also see some specs of my machine in each screenshot - pretty high specs, so that's not an issue.

If it helps clarify, I was not making any changes in the Appearance Editor. I understand some templates turn it on for making changes and some turn it off. Could this play a role perhaps?

I tried to see if there was a log file to attach in Reallusion folder, but couldn't find any.