[gmx-users] grompp error

[Osmany Guirola Cruz]

when i run the grompp i have these error
calling /lib/cpp...
/lib/cpp: not found
cpp exit code: 32512
Tried to execute: '/lib/cpp  -I/usr/local/gromacs/share/top  cpeptide.top > 
gromppXjWLUK'
The '/lib/cpp' command is defined in the .mdp file
processing topology...
processing coordinates...
Fatal error: number of coordinates in coordinate file (cpeptide.gro, 143)
             does not match topology (cpeptide.top, 0)

what should i do>
THANKS