Seeing as no one has replied, I'll post my thoughts, but I'm in no way an expert either.
I read the other post, do your files show up sometimes, all the time, none of the time, certain OSes?
Check the disk could be a thought? I'm just shooting off random thoughts, so if someone else has their say, may want to let them talk.
Do you have a backup (like the output of "dd") from before this?
You could try restoring.
I believe that would be:
dd if=/media/TREKSTOR/sdc1 of=/dev/sdc1
Or just repartition it, get rid of the partition and start over.