Cant save Year or Track tag

When i try to use dano's "discogs-Release ID extended.src" i just get a blank column for the year and track tags. And manually using the main window or the "tag panel" it just disappears before i can save tags. What am i doing wrong???

EDIT: Also when i load mp3's that have a year tag and edit any columns the year dissapears, then if i click undo it returns but the year dissapears from the file at the bottom of the list.

Please try the current Development Build.