When i get problems with rfactor it not help unistall mod for mod i test.
First i over write my rf install folder with rfactor light then test if it is ok.
If it have same problems i save in userdata my profile and controller then.
I trow the rfactor folder in the garbage and start over from scratch.
About tracks crash rfactor when loading.
Download orginal commonmas and tdf for rfactor v1.225 from here
Some mods may install wrong commonmaps.mas or terrain.tdf file in locations
I hope this helps