[Fieldtrip] Errors compiling from cabal

[Kellen J. McClain]

I tried installing fieldtrip from cabal and I got the following error:

src/Graphics/FieldTrip/ParamSurf.hs:65:0:
    Occurs check: cannot construct the infinite type: s = s -> t
    When generalising the type(s) for `torus'

I'm running ghc-6.10.2.  Has anyone seen this error?

Thanks