What seems to be the problem?

I have a very strange issue. I am not able to run a windows azure application which has a WCF service and mschart in it. Following are the steps to reproduce the error:
1) Create a new windowsazureapplication with a blank asp.net webrole
2) Now add a new WCfService
3) run to check it runs ok

http://i.stack.imgur.com/1g6gW.png nha khoa

4) now in one of the pages include mschart, and open the design of the page to make sure the webconfig is changed to use the mschart.
5) now try to run the project.
I am getting error message like this one:
enter image description here

Is this a problem with windows azure or am I doing somthing wrong?
FYI: This is not my first project on windows azure.

RuchitRami