So my friend has TMNF running, but it crashes everytime it loads a track.
It doesnt even finish loading, and it crashes.
Is there a solution to this?

i used to get this aswell, when i used to try and load replays. i would like to no what the problem is

did it work before or is it a fresh install?

aah I had the same, any big programs running in the background?

Typical Game crashes like the one described is a corrupt trackmania file weather it be in the cache or inthe documents folder.I recently did a fix for a friend by emptying the cache and deleting most recently modified files from there skins folders.

So if it was working fine maybe look at the files installed at the time the problem started.
You can do this by selecting "view" in the folder from the top menu and select "arange files by >" then select "modified" and work your way from the nearest date. (backup your files before deleting anything).
Start by emtying your cache first from the game launcher under "configure" then "advanced" then "peer to peer "tab and click the clean cache button.

Does the benching work?
If no, then it's a problem with specs.