In my project,web config properties window displays nothing.It display only plain black. comment lines and auto intelesense are not working.there are no errors to run the program.One new file included vwd.webinfo It contains below codings.

<?xml version="1.0" encoding="UTF-8"?><VisualWebDeveloper>

	Visual Studio global web project settings.

		<Service ID="{967B4E0D-AD0C-4609-AB67-0FA40C0206D8}"/></StartupServices></VisualWebDeveloper>

If i right click in web config there are no properties option in that menu.
Whats problem?