Thanks a lot for your answer in the vmd mail-list. I am moving my question to ESPResSo list beacuse I think is also related with ESPResSo.
First of all, I would like to mention that I using linux (Centos) and when I launch vmd-1.8.7, inmediatly I receive the following message: Error updating the cell information missing operand at address@hidden in _expression_ "address@hidden"
Regarding my problem, I have a series of pdb files generated with ESPResSo (using mbtools). The command that I used was: writepdbfoldtopo "$outputdir/$ident.vmd[format %04d $j].pdb"
I need to create a movie using these pdbs files, however at some point of the simulation my vesicle move away from the center and it is splitted due to periodic boundary conditions. Besides, I need to do some analysis with these pdbs files (need to calculate gr, Rg... etc), but due to the splitting of the molecules I am facing some troubles to calculate correctly such observables. What are the best options to make the movie without splitting and to calculate the observables?