Unity Android Manifest error during Apk Build

Hi , i recently update to Unity 5.2 (non beta ) version and i have free license . Earlier i was working with unity 5.1 and was using Unity Adds SDK and after i upgraded to 5.2 i deleted that SDK from standard assets and started using the built in Unity Add feature . But when i try to build apk now i get following errors in my console and my build process is terminated . By the looks of it , it seems something related to unity adds . I am lost here and would appreciate any kind of help . Thanks !

 CommandInvokationFailure: Unable to merge android manifests. See the Console for more details. 
 /Library/Java/JavaVirtualMachines/jdk1.8.0_05.jdk/Contents/Home/bin/java -Xmx2048M -Dcom.android.sdkmanager.toolsdir="/Users/abhijeet-zu452/Desktop/Android SDK/tools" -Dfile.encoding=UTF8 -jar "/Applications/Unity/Unity.app/Contents/PlaybackEngines/AndroidPlayer/Tools/sdktools.jar" -
 
 stderr[
 Error: [Temp/StagingArea/AndroidManifest-main.xml, /Users/abhijeet-zu452/Desktop/Bullet vs Time/Temp/StagingArea/android-libraries/unityads-release/AndroidManifest.xml:8] Trying to merge incompatible /manifest/application/activity[@name=com.unity3d.ads.android.view.UnityAdsFullscreenActivity] element:
   <activity
       @android:name="com.unity3d.ads.android.view.UnityAdsFullscreenActivity"
 --    @android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
 --    @tools:ignore="UnusedAttribute">
 --</activity>
   <activity
       @android:name="com.unity3d.ads.android.view.UnityAdsFullscreenActivity"
 ++    @android:theme="@android:style/Theme.NoTitleBar.Fullscreen">
 ++</activity>
 ++(end reached)
 ]
 stdout[
 
 ]
 UnityEditor.Android.Command.Run (System.Diagnostics.ProcessStartInfo psi, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
 UnityEditor.Android.AndroidSDKTools.RunCommandInternal (System.String javaExe, System.String sdkToolsDir, System.String[] sdkToolCommand, Int32 memoryMB, System.String workingdir, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
 UnityEditor.Android.AndroidSDKTools.RunCommandSafe (System.String javaExe, System.String sdkToolsDir, System.String[] sdkToolCommand, Int32 memoryMB, System.String workingdir, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
 UnityEditor.HostView:OnGUI()

 Error: [Temp/StagingArea/AndroidManifest-main.xml, /Users/abhijeet-zu452/Desktop/Bullet vs Time/Temp/StagingArea/android-libraries/unityads-release/AndroidManifest.xml:8] Trying to merge incompatible /manifest/application/activity[@name=com.unity3d.ads.android.view.UnityAdsFullscreenActivity] element:
 
 UnityEditor.HostView:OnGUI()

 Error building Player: CommandInvokationFailure: Unable to merge android manifests. See the Console for more details. 
 /Library/Java/JavaVirtualMachines/jdk1.8.0_05.jdk/Contents/Home/bin/java -Xmx2048M -Dcom.android.sdkmanager.toolsdir="/Users/abhijeet-zu452/Desktop/Android SDK/tools" -Dfile.encoding=UTF8 -jar "/Applications/Unity/Unity.app/Contents/PlaybackEngines/AndroidPlayer/Tools/sdktools.jar" -
 
 stderr[
 Error: [Temp/StagingArea/AndroidManifest-main.xml, /Users/abhijeet-zu452/Desktop/Bullet vs Time/Temp/StagingArea/android-libraries/unityads-release/AndroidManifest.xml:8] Trying to merge incompatible /manifest/application/activity[@name=com.unity3d.ads.android.view.UnityAdsFullscreenActivity] element:
   <activity
       @android:name="com.unity3d.ads.android.view.UnityAdsFullscreenActivity"
 --    @android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
 --    @tools:ignore="UnusedAttribute">
 --</activity>
   <activity
       @android:name="com.unity3d.ads.android.view.UnityAdsFullscreenActivity"
 ++    @android:theme="@android:style/Theme.NoTitleBar.Fullscreen">
 ++</activity>
 ++(end reached)
 ]
 stdout[
 
 ]