I changed my Ubuntu theme a few days ago and it worked perfectly. It is Mediterranean or something like that, a gtk theme. Then I wanted to change my cursor theme , and that worked as well ( although it did make quite a mess in the files from the icons folder). I also put on an icon theme and it worked, but now when I restarted my PC several days after it's a combination of ambiance and my theme. The apps look like my theme, and nautilus looks like ambiance. The icon pack has been removed completely as well. Only my mouse works now.
I tried logging out and back on, and also restarting. What can I do to repair my Ubuntu theme?