It seems, that the 4.0 Assembly loader will not load/accept the Telerik.Reporting.dll, because this dll is targeted to 2.0 !
the Telerik.reporting.dll usally works, but when i need to add some AssemblyReferences..., i must use the .Net Configuration system. -> without the <configSections> block, it works!
<
configuration
>
<
configSections
>
<
section
name
=
"Telerik.Reporting"
type
=
"Telerik.Reporting.Configuration.ReportingConfigurationSection, Telerik.Reporting"
allowLocation
=
"true"
allowDefinition
=
"Everywhere"
/>
</
configSections
>
…
<
Telerik.Reporting
>
<
AssemblyReferences
>
....
</
configuration
>