I had the same problem. Try increasing the min-sdk requirement in the manifest file. For me, this gave the same error in the res / values14 / styles.xml stylesheet in
<style name="Widget.Sherlock.ActionBar" parent="android:Widget.Holo.ActionBar">
After likes of different trees, changing the min-sdk value from 8 to 13 in AndroidManifest.xml worked
<uses-sdk android:minSdkVersion="13" android:targetSdkVersion="18"/>
My advice starts with a value of 18 if it starts to decrease the value until it does.
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