[gmx-users] AFM Pulling Error

Bob Johnson robertjo at physics.upenn.edu
Fri Dec 2 16:19:55 CET 2005

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 ]

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

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