This Is A Bug that Happened in build 3 1.2.0.9 and is still in 1,2,0,11 is that the custom skins. don't work. look at pic 1 this has it called skinStandard [as the main name and when i choose the skin it comes up with this. pic 2 also along with texture packs crashing when u push esc [or u go to the part where u exit the world] its annoying and please fix it. if u do that than its pretty much ready for 1.2 release unless other people have other problems.
Thanks for reading.
Rein.