[gmx-users] making index file

[Zhu, Qing]

Dear gmx-users:
     I ran MD simulations on a hexameric bundle of Alm helices in a POPC bilayer. After 1-ns simulation I created an index group made up of some lipids, but I cannot make such index file using the same residue numbers after 10-ns simulation(the only difference is the simulation time length and the system told me "Group is empty"). It seems so odd that I am very confused.
     Any helpul suggestions would be greatly appreciated.

Thank,
Qing Zhu