Problem in SMD "Constant Velocity Pulling" on Ubiquitin example

From: Lili Zhang (
Date: Thu Oct 03 2013 - 08:53:48 CDT

Hello Everyone,

I have a simple question regarding the SMD example: Constant Velocity
Pulling on Ubiquitin in the NAMD tutorial

Did anyone run this example successfully? I got an error as: TCL: Running
for 20000 steps

FATAL ERROR: # of groups forced != # of groups requested

I have no idea what it is about.

Thanks for your help,


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