title: Application no longer works in lower android versions after setting android:targetSdkVersion
body: <p>After I set android:targetSdkVersion to 15, application doest work in 1.6 emulator.
  It throws java.lang.VerifyError.</p>
  
  <p>Edit:
  The app is crashing because I'm calling invalidateOptionsMenu, which came in API 11. Now even I check before calling it (if (VERSION.SDK_INT >= 11)). It still throws same error.</p>