[chuck-users] Question about unit analyzers

Hi! I'm new to Chuck, and I'm trying to run some of the examples for unit analyzers, but I'm getting an error message like "[ifft2.ck]:line(2): undefined type 'FFT'..." wherever I declare a UA. For example, in this: //chuck.cs.princeton.edu/doc/examples/analysis/fft.ck I'm running version 1.2.0.7 (dracula) under Xandros Linux. It seems to be installed properly, I can run other sample programs using Ugens, read/write audio data, etc. It just seems to be the UA's that aren't working. Any suggestions? Thanks.