Problem solved,
I've recompiled gromacs with option adding "-L/usr/lib -ldl" and after setting the VMD_PLUGIN_PATH environment variable
gromacs works.



On 30/09/2010 16:03, Roland Schulz wrote:
Hi,

Do you get any other messages before that last message? It might tell you that you have to set the VMD_PLUGIN_PATH.

GROMACS has to be compiled with dlopen support for this to work. Did you compile with cmake or configure? Could you please look into the config.h and see whether GMX_DLOPEN is set?

Roland

On Thu, Sep 30, 2010 at 9:30 AM, Francesco Oteri <[email protected] <mailto:[email protected]>> wrote:

    Dear all,
    I would like to know how to analyze dcd trajectory in gromacs.
    I successfully installed gromacs, but if I use


    trjconv -f neck.dcd -s ../neck_model.pdb  -o next.xtc

    I obtain the following error:


    Fatal error:
    Not supported in read_first_frame: neck.dcd



    Any suggestion?

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