Not in my folder. The only thing there is the uninstaller for Studio.

I did find the interface designer, I don't think any one uses. Not sure why, it was an announced feature when Studio 4 was first released, but I haven't seen any after market UIs for Studio.

Ok, reinstalled, didn't uninstall because it wasn't there to uninstall. Used it, saved, opened and closed Studio a few times. Still there. So just do a reinstall and see if it works. Checked and the uninstaller is there now.

I don't even want to know what happened the first time, would not surprise me if it was gone later lol