When I went into my texturepacks folder (in game) right after I got 13w09a, the name & description of the (outdated) texturepack were just jumbles of blck, red, & a light gray. I'm not sure, but I think this is a cause of the lang folder change.
MC-10382
Outdated Texturepack name showing up funny (fuzzy/blurry).
Resolved
Duplicate
0
Gra Lindner
(Unassigned)
Unconfirmed
Snapshot 13w09a
Retrieved
Duplicate of MC-10309, please use the search function to see if your bug has already been submitted. Currently over 52% of tickets are being closed as duplicate.