Rreading and writing this file's metadata (xmp) has been disabled. Renders unplayable/corrupted files

Question

Hi everyone,
I've been using Premiere Pro CC for a while now, as I have a YouTube channel, and I've rendered, exported and edited around a dozen different videos, and have had no issues until now. I haven't done anything to my settings, but randomly, I am now unable to export any videos. I've tried exporting multiple times, using different formats, and I still get the same error:
     File importer detected an inconsistency in the file structure of [FILE NAME]. Reading and writing this file’s metadata (XMP) has been disabled.
I've looked around, and I've seen just about no help in fixing the issue, so I was hoping that someone could help me out.
Some of my computer details are:
Premiere Pro CC
Toshiba Z10T
Windows 8.1
Hopefully that's enough to go by
Thanks guys

Answer 1

After moving LR3.5 and catalogs to a new computer running Windows 7 and LR from an XP system, I suddenly had 6400 files with exclamation points--failure to synch metadata or similar warnings on every file.  If I thought I had one without the error, if I clicked on it--there error showed up.    It was very frustrating and I was wondering if I was going to have to keep my old computer forever.
After I searched for a couple of hours and found that there have been several discussions concerning failures to sync xmp sidecar files and failures to write metadata on this forum and others.  Some of the postings had angry rants against Adobe.  On my system, it was not Adobe that should be blamed, it was Microsoft:
On one of the Adobe threads, I noticed a post that the person had multiple external drives and the problem did not show itself on one drive.  The person said that changing the permissions on the other hard drives solved the problem.   I tried this and it worked for me.  I did not have this problem with this same drive on my XP system.  I will try to find that other forum and thank the person who gave me the solution.