calling fft

[Maynard Wright]

I'm running Octave 2.1.72 under Kunbuntu Dapper 6.06 LTS.  I downloaded and 
installed Octave from the Kubuntu repositories using Adept.   I have some 
code that ran correctly under 2.1.36 and under another installation of 
2.1.72.  When I execute the program using this installation, I get:

warning: in fopen near line 55, column 3:
warning: fopen: default open mode is now binary
sh: kpsexpand: command not found
sh: kpsexpand: command not found
error: dispatch: the symbol 'fft' is not valid as a function

The offending line is:

s_mod = fft(v_mod);

An assignment statement that uses s_mod in the following line fails and 
terminates execution.

A little experimentation seems to indicate that Octave can find internal 
functions but not loadable functions.


Any thoughts?

Thanks,

Maynard