GTAcopkiller

When I mod cars into GTA 4 I use SparkIV and I always hit the rebuild button right before I save. I'm just wondering what ReBuild does anyways? I've always wondered. Thanks

I have 358GB/594GB left on my computer but I do have a fair amount of car mods, about 25 car mods and 6 gun mods that didn't work. I don't see wat the problem is. When I spawn the cars I have I see them in traffic all the time. This problem was not here before I installed all the mods. I really don't want to reinstall the game just so I can put all the same cars back in the game and it happen all over again.

I have been downloading mods for my GTA 4 with SparkIV 0.6.2.3, and my game version is 1.0.0.4. I also have xlive.dll, and ScriptHook. When I go into my downloaded saved game all the Cars I can see are the taxi's, cops, and 1 oter car and the cars parked in my parking space. Does anybody know wat as happend? If so, please post here. Thank You!!