I'm making use of QtWebKit in my application, but when I try to debug on the device, I get the following error:

[Qt Message] file:///C:/Private/e0fc4292/qml/LocalNewsDemo/main.qml:2:1: plugin cannot be loaded for module "QtWebKit": The file 'C:/resource/qt/imports/QtWebKit/qmlwebkitplugin.qtplugin' is not a valid Qt plugin. 
     import QtWebKit 1.0 
I installed qtwebkit.sis found in QtSDK\Symbian\sis\Symbian^3\Qt\4.7.2 to my device prior to testing the application. Any ideas on how to solve this? Thanks.