Create image and save it to a folder in the app - workded locally but not online

Hello,
I had a code that creates a snapshoot of website and store the snapshoot in a specified folder.
When I deployed the app into production server, it creates the image but it does not appear or stored in the specified folder, how I can fix this proble, I wan the snapshoot to be stored in the specified folder when hte app is on the production server .
 
Code Used to make a snapshoot is attached:
http://www.TareemNet.com/1/CreateSnapshoot.rar
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