I have the same problem, the user permissions were reviewed but I still get the same error. The report executes a job from the visual studio and is executed successfully but from an application the following message does not appear:
An error has occurred during report processing. (rsProcessingAborted) Query execution failed for dataset 'dataset1'. (rsErrorExecutingCommand) For more information about this error navigate to the report server on the local server machine, or enable remote errors
could someone help me?