[Plugin: Google Adsense for WordPress] Two issues after last update

I’m not sure whether the problems started after latest WordPress or after latest plugin as I got aware of it just today.

What’s happening is that Google Adsense doesn’t show any ad placement marker anymore. I also can’t browse through different types of pages as I’m only shown my home page without any chance to switch from that.

I tried uninstalling and reinstalling the plugin and doing so I got a second issue. I now get an error message saying that I already have in my page some ad placements that I can’t modify since they’re not compatible with Google Adsense plugin. Which sounds strange as I’ve never used any other plugin

So what should I do to fix this?