This contains the following files from a vanilla installation

gtxd.img
navmeshes.img
navmeshes_animviewer.img
paths.img
scripttxds.img

If a mod corrupts or irreversibly damages any of these files, you can replace it with its vanilla version.

This contains the following files from a vanilla installation

componentpeds.img
pedprops.img
playerped.rpf
radar.img
vehicles.img
weapons.img

If a mod corrupts or irreversibly damages any of these files, you can replace it with its vanilla version.