taskdef class ...compressor.CompressorTask cannot be found

My environment is set up as it should I'd say, the ant output below shows the relevant settings. I could try to fiddle with the build files, but shouldn't this work out of fthe box? I'm using the current yui3 and builder master from github.

Output from "ant all": http://pastie.org/3419015


Unrelated images to fulfill the 20% fun quota per question:

- http://www.worldofstock.com/slides/MES4551.jpg
- http://www.liv.ac.uk/~sdb/Safari-2007/I ... ckling.jpg