Hi Kuldeep,
Please ensure that you installed and activated QuickApps (formerly known as Quest Web Parts) on the site where you want to instantiate the templates.
Also, ensure that the Configuration Editor tool doesn't display any item in red. Can you drop a web part (ie qListView) on a page and display some data?
Then, please do an iisreset an try again.
Let me know how it goes please.
Thanks,