Hi Pavitra,
n
Unfortunately Quest Web Parts (now QuickApps for SharePoint) for SharePoint 2007 are out of support.
n
I'd recommend you to upgrade to SP2010 or SP2013 latest version (6.3). If that's impossible for you then I'd upgrade to Quest Web Parts 5.7 for SP2007.
n
Please let me know how it goes.
n
Thanks,
n
n