Comments Tag Field Problem

I have some mp3 files with text in the comment field of the tag.

Some programs, like VLC Media Player, can see the data in the comment field, but MP3Tag cannot.

Any idea why and can it be corrected, short of editing the mp3 with MP3Tag?

Thanks,
Mark

Could you check if the files with problems habe APE tags? If so, then this contents overwrites the other tags.

Did you take a look at the extended Tags view (Alt+t) ?