problem in compiling Lammps

Dear all,
I am trying to compile and use Lammps, it seems that it can compile completely

size …/lmp_mohammad
text data bss dec hex filename
3863480 11304 336 3875120 3b2130 …/lmp_mohammad
make[1]: Leaving directory `/home/malaghem/soft/mylammps/src/Obj_mohammad’

But when I want to use it for simulating a molecular system it can not realize my styles for example when I chose “pair_style lj/cut/coul/long 12.0” it says;

LAMMPS (13 Jul 2011)

ERROR: Invalid pair style

while the same system with the same input file can be ran with my old version of Lammps.
then I also make some optional package

make yes-molecule

but the problem exists.
Please let me know where is the problem if any of you have an idea.
Thanks in advance.

Best regards,

You need the package kspace.

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