yeah, there was a problem with this before. all you need to do is go into your planeshift folder and rename the updater.exe to something different like updaterold.exe. then run the updaterold.exe. it will update the updater (and hopefully the trepor file) for you.
the problem is the updater seems to dislike updating itself while running, so you have to rename it.
if the trepor file still won\'t work, then the other option is to delete the entire models zip file (under the art folder). but, since the file is so big, pray the renaming works.
there might have been another way to fix the trepor file, but i can\'t seem to recall it.