I am trying to remove some residues from a structure in xLeap with the following command:

remove p p.1

where p is the name of unit,

But after doing this, as I click to the graphical window of xLeap, xLeap immediately crashes with the message 'Segmentation fault (core dumped)'.

I am facing an unusual problem with xLeap after I re-installed (ubuntu 12.04 ) and I am using Amber13Tools. Has anybody faced this before? I suspect some missing package or prerequisite but I didn't see any such report while installing Ambertools.