Oh yeah I guess those weird folders are cause I changed the temp directory while troubleshooting. I did what you said on the third line, but I might have found the problem. In the par2 tab, I have about 500 lines and each set is: unlabeled, 0.00KB, 0/0 blocks, 0 files, 0 bytes block size. When I try to delete these par sets nothing is happening.
Also, when I deleted the queue directory in the settings I am now getting an error at startup: "Cannot create file [...]\Alt.binz\misc\par2.exe. The process cannot access the file because it's being used by another process" among others like an access violation when I close it.
I did everything else in that line except purge the par2 list and tried to dl something and once again it failed to unrar. Last line in the log is "Yenc file blah.r11 decoded in 94ms" and then nothing about unrar.