After having to uninstall then reinstall SB due to a few problems related to the /spawnmonster command, I was in 1.3. A mod that I used in 1.2 and its later updates had an update, so I tried to delete the folder of version 1.2 so I could download the folder of version 1.3, and got the error below. I have complete ownership of the folder, its subfolders, and files; I even opened Windows Explorer in Administrator Mode. What should I do? I really don't want to have to restart my computer every time something like this happens, and even then, restarting sometimes doesn't even fix it.