I'm not sure. I had closed the script window and it seemed to close Leadwerks altogether, but the icon was still open in my start menu bar. Nothing on screen, though. So I uninstalled it and tried to reinstall it and that's when I got the file lock problem. I went on Steam and followed their recommendations, clearing the library and repairing it, and rebooted my computer, then reinstalled Leadwerks and it worked but the icon was still showing up in my start menu but there was nothing on screen. I eventually resolved it when I hovered over that icon and popping up the mini-window pop-up, which was blank. I scrolled to the mini window pop-up and right-clicked/maximize window and it popped up. It seems as if Leadwerks had minimized itself to such a degree that I couldn't even see it on my screen, and I did check for that, lol. It works fine now. Must have been a glitch somewhere. Idk. I couldn't reproduce it but I roughly recreated it in GIMP: