Strange behavior with 2 overlays on a map.

[Pajarico]

Hi, I've been trying to test an overlay on map new_14-1.tmx.gz. I edited it with tiled from SVN, because 0.6.1 can't open it, I guess is because the particle effects? So I added the overlays:
http://pastebin.com/f50e599b7

And the map to the customdata folder. I also added the birds.png file. Everything is loaded fine, but the screen is corrupted in that map (rest are displayed just fine):

(see the birds at the bottom right)

Here is the birds.png:


Thanks to QOAL the file is here: http://qoal.kicks-ass.net/ups/new_14-1.tmx.gz