Comment 4 for bug 399565

From the stacktrace is clear that plan is NULL fftw_execute (p=0x0).
This happens because fftw_plan_r2r_1d doesn't work for some reason with new fftw version from karmic.
I have the same problem in my own application.
This bug should be assigned to libfft, not extace. The question remains whether it is libfft problem or ubuntu configuration problem.