From: Axel Kohlmeyer (akohlmey_at_cmm.chem.upenn.edu)
Date: Sun Mar 25 2007 - 16:46:41 CDT

On Sun, 25 Mar 2007, Zheng Hu wrote:

ZH> The following the information shown when VMD starts up.
ZH>
ZH> >Spaceball driver ont installed. Spaceball interface disabled.
ZH> >No joysticks found. Joystick interface disabled.
ZH> >Running custom VMD startup scripts
ZH> Cannot unset "ext". no such variable
ZH>
ZH>
ZH> The last sentence shows "foreach" loop is not executed.

please look closer to your input.
one of your scripts has an error (it is unsetting ext which
is not defined), thus the loading of the rest is aborted.
you have to isolate the problem and protect the unset
with a corresponding 'info exists' construct.

for more details have a look into the tcl docs.

cheers,
  axel.

ZH>
ZH>
ZH> Thanks,
ZH> Zheng
ZH>
ZH>
ZH> ---------------------------------
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-- 
=======================================================================
Axel Kohlmeyer   akohlmey_at_cmm.chem.upenn.edu   http://www.cmm.upenn.edu
   Center for Molecular Modeling   --   University of Pennsylvania
Department of Chemistry, 231 S.34th Street, Philadelphia, PA 19104-6323
tel: 1-215-898-1582,  fax: 1-215-573-6233,  office-tel: 1-215-898-5425
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If you make something idiot-proof, the universe creates a better idiot.