[gmx-users] box siz

[mah maz]

Dear all,

I have calculated the size of the box required for my system. however, when
applying the g_x2top command with this box size, a fatal error occurs:
'couldnt find forcefield for all atoms'. making the box larger in size,
this error is not appeared. what is the exact problem; box size or
forcefield? and does the larger box affect the simulation parameters?

Thank you!