Windows v6 beta test

[Admins]

I will check the tile layers.
BTW: please someone on Zodiac remove that client.bufftime_expbuff=3349.300830075 stuff, it's updating that 20 times each second, which is causing 600 bytes being sent by each player each second, probably without real purpose (can't use some simple client-side var?).

Update: the problem with the tile layers had to do with the detection for fully black or transparent tiles (for optimiztations) which wasn't correct for RGBA images so tilesets with RGBA images were ok but not palettized ones. It will be fine with the next version which will be up in a few hours.