Can anyone help me upgrade my GP4?

thanks for your help - i see that has loaded the cars now, hopefully it will now run

just another query - can i put multiple different mods in teh mod folder - if so, how do i then switch from one mod to another?

okay the mod runs and looks nice - i like it very much, but i have two issues - the track names do not match the tracks - i went to play a montreal quick race, and it plays monaco, and i went to play monace and it is playing A1 ring, which isnt in the 2013 schedule - so i need to load tracks for 2013 too, i though these would be in teh mod, where do i find this

lastly when i leave the game CSM has an error message that reads

Can't swap file
"Sound\pc\tk1.st1
" to "
mods\2013 v2.0\Data\Music\07-cannt stop.st1"
If you click ignore then I will no longer attempt to restore
If you click abort I will try again next time

- what does this mean? retry doesnt work

can anyone help me with this? i guess i can gather together all the tracks, but how do i fix the "can't swap file" message - what does this even mean?