Hi. I'm new here and am ex long time user of OpenX and then switched to Google DFP after the OpenX security breach, and have just installed the latest version of Revive Ad Server. The installation went well and then I did the standard create advertiser, campaign, add banner.. create zones links zones to banner thing.. and all look fine... used a 300x250 test banner and link. Then grabbed the invocation code, and BOOM, the ad server does not seem to serve any ads regardless of what invocation tag I use. How to debug this problem with ad server? Thanks! UPDATE: Ahhh.... nevermind! It working now!