Stacktrace Loading fragment (with google map) gives exceptio

    05-13 09:47:09.970 32124-32124/be.howest.nmct.roeteplanner E/AndroidRuntime:
    FATAL EXCEPTION: main
    Process: be.howest.nmct.roeteplanner, PID: 32124
    android.view.InflateException: Binary XML file line #28: Error inflating class fragment
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:713)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
        at be.howest.nmct.roeteplanner.RoeteActivity.onCreateView(RoeteActivity.java:38)
        at android.app.Fragment.performCreateView(Fragment.java:1700)
        at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:890)
        at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1062)
        at android.app.BackStackRecord.run(BackStackRecord.java:698)
        at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1447)
        at android.app.FragmentManagerImpl$1.run(FragmentManager.java:443)
        at android.os.Handler.handleCallback(Handler.java:808)
        at android.os.Handler.dispatchMessage(Handler.java:103)
        at android.os.Looper.loop(Looper.java:193)
        at android.app.ActivityThread.main(ActivityThread.java:5299)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:515)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:829)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:645)
        at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.IllegalArgumentException: Binary XML file line #28: Duplicate id 0x7f0d0090, tag null, or parent id 0xffffffff with another fragment for com.google.android.gms.maps.SupportMapFragment
        at android.support.v4.app.FragmentManagerImpl.onCreateView(FragmentManager.java:2289)
        at android.support.v4.app.FragmentController.onCreateView(FragmentController.java:111)
        at android.support.v4.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:314)
        at android.support.v4.app.BaseFragmentActivityHoneycomb.onCreateView(BaseFragmentActivityHoneycomb.java:31)
        at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:79)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:689)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
        at be.howest.nmct.roeteplanner.RoeteActivity.onCreateView(RoeteActivity.java:38)
        at android.app.Fragment.performCreateView(Fragment.java:1700)
        at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:890)
        at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1062)
        at android.app.BackStackRecord.run(BackStackRecord.java:698)
        at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1447)
        at android.app.FragmentManagerImpl$1.run(FragmentManager.java:443)
        at android.os.Handler.handleCallback(Handler.java:808)
        at android.os.Handler.dispatchMessage(Handler.java:103)
        at android.os.Looper.loop(Looper.java:193)
        at android.app.ActivityThread.main(ActivityThread.java:5299)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:515)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:829)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:645)
        at dalvik.system.NativeStart.main(Native Method)