FOSS gamedev and creative worlds

Hi. I downloaded latest win32 build (v0.2.20110731_3) and everything works great BUT ladders.
Even though I have texture sprite in data dir, when I craft/see ladder it looks like unknownblock and I can't climb it.

Any suggestions?
Thank you!

its only included in the linux daily and minetest delta at the momment I have the same problem either build one of the delta forks or wait for the next version