[1.1.0] Mac: images created with Mac snapshot (shift-cmd-4) cannot be used with Sikuli

[RaiMan]

I want to find top system/menu bar and click sign out.
But My code is not recognizing the top menu bar. It is there. I can see that clearly.
What am I doing wrong? I was looking up answers and FAQ. There is reference to screen(0).
Not sure how it helps me.
Thanks.

Here is the code (edited to remove local info)

# Sign out
myappMenu="MyappMenu.png"
myappOption="MyappMenuOptionMistral.png"
signOut="MyappMenuMistral.SignOut.png"

if exists(myappMenu):
    click(myappOption)
    click(signOut)
else:
    print("Myapp Menu not found"\n)
    sys.exit(1)

I am running IDE 1.1.0-Beta1
Build 2014-05-05-18

I am running IDE on
OS X 10.9.2

Model Name: MacBook Pro
  Model Identifier: MacBookPro10,1