The operation 'getOutput' is not allowed at this time

[adwiseman]

In JAVA, we have written a regression suite of reports, that we run via the reportService, with XML as our output type. 

Intermittently, we get the error "The operation 'getOutput' is not allowed at this time" when we retrieve the output from reportService.  We get this on even the simplest of reports, but only when cognos is under heavy load.  4 to 6 reports running at the same time on our dev windows 2003 cognos server.

I've found many posts where people are getting this error, but no resolutions.  I have tried the 2 cognos support sollutions.  I don't think there the issue, as I can get this error even on the simplest report of 1 dimension on the rows, and 1 measure on the column.