UnityOBBDownloader Android Manifest merge error

i have unity 5.1.1 and i’m trying to use the unity obb downloader with unityads and google play services.

everything works great until i import the obb downloader plugin. when i try to build the game it says there’s an error merging the android manifest.

i have no idea what it’s trying to tell me is wrong or what to do about it.

Error: [Temp\StagingArea\AndroidManifest-main.xml, C:\Users\sophia\Documents\Catgirl Games\ZoomZoomBoom\Temp\StagingArea\android-libraries\UnityOBBDownloader\AndroidManifest.xml:12] Trying to merge incompatible /manifest/uses-permission[@name=android.permission.WRITE_EXTERNAL_STORAGE] element:

UnityEditor.HostView:OnGUI()

CommandInvokationFailure: Unable to merge android manifests. See the Console for more details.
C:\Program Files\Java\jdk1.7.0_21\bin\java.exe -Xmx2048M -Dcom.android.sdkmanager.toolsdir=“C:/Users/sophia/AppData/Local/Android/sdk ools” -Dfile.encoding=UTF8 -jar “C:/Program Files/Unity/Editor/Data/BuildTargetTools/AndroidPlayer\sdktools.jar” -

stderr[
Error: [Temp\StagingArea\AndroidManifest-main.xml, C:\Users\sophia\Documents\Catgirl Games\ZoomZoomBoom\Temp\StagingArea\android-libraries\UnityOBBDownloader\AndroidManifest.xml:12] Trying to merge incompatible /manifest/uses-permission[@name=android.permission.WRITE_EXTERNAL_STORAGE] element:

++
++(end reached)
]
stdout[
[Temp\StagingArea\AndroidManifest-main.xml, C:\Users\sophia\Documents\Catgirl Games\ZoomZoomBoom\Temp\StagingArea\android-libraries\MainLibProj\AndroidManifest.xml:13] Skipping identical /manifest/application/meta-data[@name=com.google.android.gms.version] element.
]
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 building Player: CommandInvokationFailure: Unable to merge android manifests. See the Console for more details.
C:\Program Files\Java\jdk1.7.0_21\bin\java.exe -Xmx2048M -Dcom.android.sdkmanager.toolsdir=“C:/Users/sophia/AppData/Local/Android/sdk ools” -Dfile.encoding=UTF8 -jar “C:/Program Files/Unity/Editor/Data/BuildTargetTools/AndroidPlayer\sdktools.jar” -

stderr[
Error: [Temp\StagingArea\AndroidManifest-main.xml, C:\Users\sophia\Documents\Catgirl Games\ZoomZoomBoom\Temp\StagingArea\android-libraries\UnityOBBDownloader\AndroidManifest.xml:12] Trying to merge incompatible /manifest/uses-permission[@name=android.permission.WRITE_EXTERNAL_STORAGE] element:

++
++(end reached)
]
stdout[
[Temp\StagingArea\AndroidManifest-main.xml, C:\Users\sophia\Documents\Catgirl Games\ZoomZoomBoom\Temp\StagingArea\android-libraries\MainLibProj\AndroidManifest.xml:13] Skipping identical /manifest/application/meta-data[@name=com.google.android.gms.version] element.
]

hey, were you able to solve this issue??
i am having the same problem , if you know how to fix it then please do help me