I have seen this issue sporadically in an environment where Workspace is load-balanced. It seems to be due to Workspace calling out to SSRS, with affinity not set correctly.  Thus, it isn't always the same NLB node hosting the Workspace session and the Report. Do you have load-balanced K2?

I geet the following error when I call my standard reports from the workspace: Exception message: Execution 'qhrqsq45nc2dcran1zc2ig55' cannot be found ---> Execution 'qhrqsq45nc2dcran1zc2ig55' cannot be found My reporting services and sql ser ver is ona aseperate machine from k2. The reports work perfectly fine from SSRS, but not from the ...