Okay, I was going to make a big tower filled with enemy coalition units holding Ak47s and sniper rifles, but when I tested it it worked perfectly, but when I reset the game it said that a copy of Soldier Light hasn't been defined. So I tried it with Ronin soldiers, same thing except it said Ronin Soldier 3 hasn't been defined. Why can't I use any people at all in the scene?

The other problem is, sometimes, 30% of the times I try to play, I'm in the middle of a game and then the screen goes black, but it smashes my whole computer to peices, it gets crashed to entirely non-responsive and the keyboard shuts down too. Sometimes the screen won't even go black and it'll just stay on the frame it was on during the crash and loop the sound being made when it happens. How do I fix this?

The FINAL problem is when I want to edit a pre-downloaded game file, one that comes with CC, I have to move it all the way back to :C files to save the changes I made, otherwise it says that that I need administrator permission or the path is incorrect.

Well your first problem has to do with two things.

First, you shouldn't have any "Ronin Soldier X" if you've installed the latest build. They've all been replaced with named units. Also, where is your scene saved? If it's within Base.rte, it could be simple read order problems. Try to extract it to a seperate RTE.

Second problem is just your computer and CC not agreeing with each other.

Third problem is Vista and CC not agreeing with each other. Uninstall CC and then reinstall it to your Documents folder for much easier access.

Alright, I'll try checking out all of these things before I even think about reinstalling.