MetaX not (Really) writing data

[mtfield]

I had a few .mkv files i converted with visual hub, the resulting files were around 4.5 gb.. I opened up metax and dragged them in and got an error message telling me i needed to turn on support for large files. So i turned it on and they dragged in fin and I set up the tags how i wanted them. I hit write and it finished in about 2 seconds saying they were completed successfully. When I dragged the files to itunes it came in without any tags, but if i drag it back to metax the tags appear... what's going on? the same thing happened when i had on large file support when I tried to do a normal sized file (under 4gb) thanks for any help... PS I emailed the creator, but never received a response...