I have a SSRS 2005 SP1 running on Windows 2003 SRS. On reports with
parameters we are getting the following error.

Execution 'rgaerh55bisinzr1nlmr13jk' cannot be found (rsExecutionNotFound).

Anyone else seen this? Any suggestions on how to resolve this?

Yes, we are seeing the same thing.
In our case, the report runs the first time, with the default parameters --
which says that there's an aweful lot of setup that is functioning just fine.
Then, upon changing a parameter and pressing "View Report", the following
obscure error shows up:
Execution 'qr1hx055hlpkx445xluqd4yv' cannot be found (rsExecutionNotFound)

It also occurs when simply pressing "View Report", with no changes to
parameters.


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