Hi, I have looked through this site to find the answer to my problem and have found this link: http://forums.asp.net/p/931932/1094727.aspx#1094727 which is kind of on the correct path.
My problem:
When adding any control from the web forms toolbox to the page in design mode, the control shows, "Error Creating Control".
When the mouse is hovered over the control the IDE reports, "Object reference not set to an instance of an object", is displayed.
This problem does not exist on newly created solutions/projects. Other developers in the team can add controls without any problem on their local machine, so it is a local issue.
In both cases, the "get latest version" is selected.
We are using Visual Studio 2003, Framework 1.1.
Any ideas?