ActionBarSherlock in Android 4.1.1

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http://stackoverflow.com – I am using the latest release of ActionBarSherlock which is 4.2. I used it in different versions of Android devices such as 2.3.5, 3.2 and 4.0. In all these versions, ActionBar appears at the top of the Activity. Today I installed my app on a new device with Android version 4.1.1. ActionBar is not at the top no more. It is appeared as option-menu and the sub-menus are appeared as context-menu. Do you know how can I have the actionBar at the top, like the older versions? (HowTos)