Comment 6 for bug 1386163

I can solve it as follows :
1) go to http://mgltools.scripps.edu/downloads and click on mgltools_Linux-x86_64_1.5.6_Install this will download mgltools_Linux-x86_64_1.5.6_Install and the later goes on download folder.

2)To grant execute permission, type the following command at a command prompt:
chmod +x MGLTools-$Version-Linux-x86-Install

but change it depend on your download folder in my case:

          chmod +x /home/suhad/Downloads/mgltools_Linux-x86_64_1.5.6_Install

3)Type sudo /home/suhad/Downloads/mgltools_Linux-x86_64_1.5.6_Install press enter
           the wizard for installation begin follow the wizard instruction and choose the destination
            location where you want to install mgltools after finishing the wizard go to the
           destination location and launch the mgltools_Linux-x86_64_1.5.6 icon the autodock tools
           will start.