GPC 1979 and F1 1985 problem

[JGoenR]

I have got a big problem with these two mods. Don't know what's wrong because 2 months ago they worked fine. When I load rFactor with one of these mods I can't see anything. After the intro game loads up, but I can't see the spinner or the menu. However, I can hear the music, but everything is black. Any solutions?

EDIT: no help is needed anymore. I reinstalled rFactor and now everything works like it used to.