design view error

[Ibrahim Imam]

i set up a new development machine and now i am getting the following error when i try to open the design view of a report:

Value cannot be null. Parameter name: instance

the sources, assemblies and web.config is all the same as on the other machine where it works.
i tried to rebuild the project, restart VS2008 but nothing helps.

any hint would be highly appreciated
regards

[Ibrahim Imam]

i forgot to install the telerik reporting on the new machine so the VS support was not installed.

i installed the latest telerik reporting version and it works now