You'r not able to publish for flash player 4 from cs5 and go for the old versions . No way!
so then, simply put:
how to create google AdWords ads with Flash CS5?
I googled it! A funny thing is:
Flash versions: All Flash ads must be published for Flash Player version 4-10.
It include the version 10 too right? then why do you go for flash 4?
Anyway, I will reply you if I come across a solution.
any posts i googled and all information i found say that "All Flash ads must be published for Flash Player version 4-10" means that the published swf must support all these flash players. this also seems contradictory to me, but i even found posts from google employees stating exactly that:
No, it might be wrong:
ActionScript versions: ActionScript version 1-3 are acceptable.
As stated above it accepts the script version 1,2 and 3. If you write the script on AS3 then sure it will not support on flash 5 . So that was an documented as a bug. they should specify the versions of player.