[galaxy-user] Tophat2 not working?

Hello, I've been trying tophat 2 on the public server since last week but I don't get any results. I got one empty output for " the output datasets were deleted while the job was running, the job was manually dequeued or there was a cluster error." one error with " Unable to queue job for execution. Resubmitting the job may succeed." and one empty output with no error message. It seems that tophat 2 is new on the server, has anyone run it with success yet? Thanks, Delong