title: Unity 5.1.1 android "merged manifest" or "classes into dex format" error
body: <p>I tried this versions on my unity 5.1.1 (6.2.2, 7.0.1, 7.0.2) and I get errors in all when I build that in android.</p>
  
  <p>Any idea?</p>
  
  <p>In the 'stable version 6.2.2 I get "unable to convert files into dex format"</p>
  
  <p>errors:</p>
  
  <p>1.
  CommandInvokationFailure: Unable to convert classes into dex format. See the Console for details.</p>
  
  <blockquote>
    <p>C:\Program Files\Java\jdk1.7.0_17\bin\java.exe -Xmx2048M -Dcom.android.sdkmanager.toolsdir="C:/Program Files (x86)/Android/android-sdk\tools" -Dfile.encoding=UTF8 -jar "C:/Program Files/Unity/Editor/Data/BuildTargetTools/AndroidPlayer\sdktools.jar" -
    stderr[
    UNEXPECTED TOP-LEVEL EXCEPTION:
    java.lang.IllegalArgumentException: already added: Landroid/support/v4/util/TimeUtils;
    ets..</p>
  </blockquote>
  
  <p>2.
  Error building Player: CommandInvokationFailure: Unable to convert classes into dex format. See the Console for details.</p>
  
  <blockquote>
    <p>C:\Program Files\Java\jdk1.7.0_17\bin\java.exe -Xmx2048M -Dcom.android.sdkmanager.toolsdir="C:/Program Files (x86)/Android/android-sdk\tools" -Dfile.encoding=UTF8 -jar "C:/Program Files/Unity/Editor/Data/BuildTargetTools/AndroidPlayer\sdktools.jar" -
    stderr[
    UNEXPECTED TOP-LEVEL EXCEPTION:
    java.lang.IllegalArgumentException: already added: Landroid/support/v4/util/TimeUtils;
        at com.android.dx.dex.file.ClassDefsSection.add(ClassDefsSection.java:122)
        at com.android.dx.dex.file.DexFile.add(DexFile.java:161)
        at</p>
  </blockquote>
  
  <p>ets..</p>
  
  <p>In the 7.0.2 I get <strong>"can't merge manifest files"</strong></p>