is there any other error other than terminated with error?
Are you able to log onto the fusion middleware control (on my 11gr2 this is something like http://myhost:7001/em)?
What does it say in the reports server page when you click on the number in the "Failed Jobs" section? Maybe there is some text after "terminated with error" like REP-xxxx that can help you.
Hi, check your report error in reports server queue...
http://localhost( or ip address):portnumber/reports/rwservlet/showjobs?
in this you click on job status and check for an error....
if the above link is not open then check whether your report server is running or not.