[gmx-users] AFM Pulling Error

[Bob Johnson]

Hello everyone,
For some reason I get the following error message when using AFM pulling:

Groups: 5P
Pull code using absolute reference.
Using 1 pull groups
Using distance components 0 0 1

Fatal error: Can't find group  in the index file


I looked in the pullout.ppa file and it has the following:
; Groups to be pulled
group_1                  = 5P
group_2                  =
group_3                  =
group_4                  =

Additionally, my index file that I'm passing to mdrun has this:

[ 5P ]
 32

I don't know why it has an empty string in the error message. Any ideas?
Thanks,
Bob Johnson