I installed version 4.2 on two blogs. On one it works PERFECT on the other one it has a problem.
When I edit a page or category the edit bar SHOW "adsense" with a dropdown to select the ad you want placed in the post etc. but as soon as the article loads it DISAPPEARS and is no longer there to select an ad.
Hope you can understand what I am trying to explain. I have screenshots but don't see a place here to put them up.