@Bldko: It seems to work fine for me. Not sure why it won't for some people like Renato. It works both in simulator (PC and mac) as well as in the devices (iphone5, iphone4 and ipad2 all OS 6+) I believe the notes says that It won't work for OS 5 so watch that for that. All i did was to copy/past the code above (in my main.lua) , start a campaign and use show_ad() (not the timing one) in my gameOver.lua. I do not get 100% fill rate but not bad. My plan is to combine it with Revmob (and maybe even with Tap for Tap) so pretty much no matter what people will see an ad. Need more work on this implementation.
In short, yes it works for ME!
Hope this help.
ps: As I said before, I am using my Space Command ID (which is a live app) for it but my code is not integrated yet in Space Command. Not sure if that makes a difference.