Error 500 HTTP Web Server: Lotus Notes Exception - Unsupported trigger and search in the background or embedded agent

I m getting an error…

When i am run an agent in web

http://Server_Name/Path/Database_Name.nsf/Agent?Openagent

"Error 500

HTTP Web Server: Lotus Notes Exception - Unsupported trigger and search in the background or embedded agent "

and even i set Target as “None”…

Please any one give the solution

Thanx in advance…

Subject: Error 500 HTTP Web Server: Lotus Notes Exception - Unsupported trigger and search in the background or embedded agent

What is the Trigger? Have you tried On schedule - Never? If it runs from a view, it will throw this error when trying to run from the web.