Hello Billy Jacobs,
For a Silverlight application all relevant assemblies are embedded into the XAP file at compile time and there is no need to upload manually assemblies.
Does this report contain a lot of report parameters with multiple selected values? There was such a problem that we've fixed in the Q2 SP1
: Unable to print a report when the GET request is too big (e.g. multiple parameters or multivalue parameters with lots of selected values).
If still having problems even with the service pack, please open a support ticket and attach a sample project that exhibits the problem.
the Telerik team
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