Like the title says. my game loads fine using a save that i myself have created, but when i download and copy a 100% gamesave and try to load, the game crashes... Help?

It's normal, you have to use Xliveless instead of Dsound. Then you put the 100%savegame to the Rockstar folder in "My Documents".

GFWL will recognize your user id and only allow your own savegames.

It's normal, you have to use Xliveless instead of Dsound. Then you put the 100%savegame to the Rockstar folder in "My Documents".

GFWL will recognize your user id and only allow your own savegames.

 

I am using xliveless. still crashes my game 

Try another savegame, maybe this one has cars on parking lots.

And be sure to put the savegame in C:UsersYOURNAMEDocumentsRockstar GamesGTA IVsavegames