Need Help Pls

Am newbie to VPS...

Am into wapsites(mobile sites) only..
am using different readymade scripts to run sites..
but the problem am facing is that, some functions of the script is not working..
the important thing is the 'screenshot" facility of a script not working properly..
but the same script in another vps works perfectly...

so i wonder whether there is some configuration or something to set in my new vps..

can any one help me??
thx in advance..

and the links to check are below..


the link to script that not working properly (see the screenshots are not showing)


the link which works perfectly (which is in another vps)