Larry-- I had a similar problem a couple of weeks ago when I was setting up a new developer on a test server. Let's assume for the moment that the Proxy Account has been set up correctly (credentials, etc.). If there are no problems with the Proxy then the user that is creating the job must have the right to create a SQL Agent job. So, what role does the job creator account have in MSDB? What role has been assigned to the proxy account in MSDB? Does the proxy account have access to all of the databases that are accessed in the job? Finally, your attachment does not show the set-up page that has the Run-As dropdown. Did you associate the Proxy account with the SSIS subsystem so that it will have the ability to execute SSIS packages? I know that there are a lot of questions here but you can use them as a checklist to make sure that you've covered all of your bases.