methane in a water box with FIST

[Marius Retegan]

Hello

I have some problems running a simulation of methane in a TIP3P water
box. I've added the input, coordinates and amber parameter file to
repository (mebox.tar.gz). I think that the problem is related to the
fact that some of the LENNARD_JONES_ACOEF and LENNARD_JONES_BCOEF have
zero value, which gives NaN for the van der Waals parameters in the
case of hydrogen atoms. Also I would like to add that the simulation
work fine with Amber8.

Thanks
Marius