some jobs ran fine as they are running daily. there was one that failed. I had to re-install my workbench and reconfigure it to make it work. Its working now...
it was there this morning but i accidentally clicked on close on that tab :( I tried to close and re-open workbench, didn't work. preview button works when i focus on a job but it doesn't show the preview or the ouput even when i click on preview or run. my workbench version is 4.62.6715.32090
there is no preview/output window showing up. I have attached a screenshot here.