[flexcoders] The apk is not properly signed - trying to get an app into the android market ?

[luvfotography]

Hi, I'm using the same certificate I used to get my FLEX 4.6 mobile app into 
the apple store.  Apple accepted it, now when 

I try to upload and publish my apk into the 'Google Play' android market, it 
complains.

Anything that I should look for? 

thanks,