I managed to get a little further early this morning with that one command to install dependencies for something that has failed dependencies. however, it didn't work with gksu. too many of its dependencies seem to be delisted. that's when I started going through .deb files for gksu and libgsku. I think one of them caused the problem. I found a ppa for gksu, which I also tried after learning what they were, but I had two problems: 404 errors with the source only, which then caused uri source error when trying to compile gksu. gksu is the problem, because you seem to be locked in grabbing the files piece by piece. I think the file that caused the problem with subo is part of libgsku iirc. I think it was the third or fourth dependency down when that problem happened. it happened twice, so I'm not sure if it was the same file I downloaded or not. it was very frustrating, because I had no way to use sudo again. I looked up both this problem and the uri source problem via google, but nothing I found worked. I started to think that someone was locking me out, can they do that if they have my username? it's in those pics above. anyway, I uninstalled it after two failed attempts. I had a third failed attempt to where an install got stuck installing. I found out I needed perl installed first, so I had to start over there. I didn't get the error the second time, after installing perl. it just seems like there's so much to learn beforehand or you'll getting extremely frustrating. I bet gksu was still available when drc-sim was released, so it was probably much easier to install the app/script back then. I read that gksu is used for editing files, to now use gedit, but how do you replace the command? I think gksu allows higher privileges for all files at the same time, so I guess that's why they took it down, security risk? gedit seems to do one at a time, so I can see how it can be a pita.