I was upgrading from Google Game Services unity plug-in v9.11 to v9.25
GA used to work with v9.11 just fine ... but after the upgrade it's producing some compilation errors while building the apk ... specifically in the conversation process from .class to dex file format
I'm also using Adcoloney and Soomla if this can affect ..

the error is gone when I delete the file "libGoogleAnalyticsServices.jar" .... but off course GA doesn't work then

here are the logs I got in the unity console:

CommandInvokationFailure: Unable to convert classes into dex format. See the Console for details.
C:\Program Files\Java\jdk1.8.0_11\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\PlaybackEngines\androidplayer/Tools\sdktools.jar" -

stderr[
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/google/android/gms/analytics/internal/Command;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/google/android/gms/analytics/internal/Command$1;
2 errors; aborting
]
stdout[
processing archive bin\classes.jar...
processing com/unity3d/player/a$1.class...
processing com/unity3d/player/a$2.class...
processing com/unity3d/player/a$a.class...
processing com/unity3d/player/a.class...
processing com/unity3d/player/b$1.class...
processing com/unity3d/player/b$2.class...
processing com/unity3d/player/b.class...
processing com/unity3d/player/c.class...
processing com/unity3d/player/d$1.class...
processing com/unity3d/player/d$2.class...
processing com/unity3d/player/d.class...
processing com/unity3d/player/e.class...
processing com/unity3d/player/f.class...
processing com/unity3d/player/g.class...
processing com/unity3d/player/h.class...
processing com/unity3d/player/i.class...
processing com/unity3d/player/j$1.class...
processing com/unity3d/player/j$2$1$1.class...
processing com/unity3d/player/j$2$1.class...
processing com/unity3d/player/j$2.class...
processing com/unity3d/player/j.class...
processing com/unity3d/player/k$1.class...
processing com/unity3d/player/k.class...
processing com/unity3d/player/l.class...
processing com/unity3d/player/m.class...
processing com/unity3d/player/n$1.class...
processing com/unity3d/player/n.class...
processing com/unity3d/player/NativeLoader.class...
processing com/unity3d/player/o.class...
processing com/unity3d/player/ReflectionHelper$1.class...
processing com/unity3d/player/ReflectionHelper$a.class...
processing com/unity3d/player/ReflectionHelper.class...
processing com/unity3d/player/p.class...
processing com/unity3d/player/q$1.class...
processing com/unity3d/player/q$2.class...
processing com/unity3d/player/q$3.class...
processing com/unity3d/player/q.class...
processing com/unity3d/player/r.class...
processing com/unity3d/player/s.class...
processing com/unity3d/player/UnityPlayer$1.class...
processing com/unity3d/player/UnityPlayer$2.class...
processing com/unity3d/player/UnityPlayer$4.class...
processing com/unity3d/player/UnityPlayer$5.class...
processing com/unity3d/player/UnityPlayer$6.class...
processing com/unity3d/player/UnityPlayer$7.class...
processing com/unity3d/player/UnityPlayer$8.class...
processing com/unity3d/player/UnityPlayer$9.class...
processing com/unity3d/player/UnityPlayer$10.class...
processing com/unity3d/player/UnityPlayer$11.class...
processing com/unity3d/player/UnityPlayer$12.class...
processing com/unity3d/player/UnityPlayer$13$1.class...
processing com/unity3d/player/UnityPlayer$13.class...
processing com/unity3d/player/UnityPlayer$3.class...
processing com/unity3d/player/UnityPlayer$14.class...
processing com/unity3d/player/UnityPlayer$15.class...
processing com/unity3d/player/UnityPlayer$16.class...
processing com/unity3d/player/UnityPlayer$17.class...
processing com/unity3d/player/UnityPlayer$18.class...
processing com/unity3d/player/UnityPlayer$19.class...
processing com/unity3d/player/UnityPlayer$a.class...
processing com/unity3d/player/UnityPlayer$b.class...
processing com/unity3d/player/UnityPlayer$c.class...
processing com/unity3d/player/UnityPlayer.class...
processing com/unity3d/player/UnityPlayerActivity.class...
processing com/unity3d/player/UnityPlayerNativeActivity.class...
processing com/unity3d/player/UnityPlayerProxyActivity.class...
processing com/unity3d/player/t.class...
processing com/unity3d/player/u$1.class...
processing com/unity3d/player/u.class...
processing com/unity3d/player/WWW.class...
processing org/fmod/FMODAudioDevice.class...
processing org/fmod/a.class...
processing bitter/jnibridge/JNIBridge$a.class...
processing bitter/jnibridge/JNIBridge.class...
processing bin\classes.\com\AGGameStdio\PenFight\R$attr.class...
processing bin\classes.\com\AGGameStdio\PenFight\R$color.class...
processing bin\classes.\com\AGGameStdio\PenFight\R$drawable.class...
processing bin\classes.\com\AGGameStdio\PenFight\R$id.class...
processing bin\classes.\com\AGGameStdio\PenFight\R$integer.class...
processing bin\classes.\com\AGGameStdio\PenFight\R$raw.class...
processing bin\classes.\com\AGGameStdio\PenFight\R$string.class...
processing bin\classes.\com\AGGameStdio\PenFight\R$style.class...
processing bin\classes.\com\AGGameStdio\PenFight\R$styleable.class...
processing bin\classes.\com\AGGameStdio\PenFight\R.class...
processing bin\classes.\com\google\android\gms\R$attr.class...
processing bin\classes.\com\google\android\gms\R$color.class...
processing bin\classes.\com\google\android\gms\R$drawable.class...
processing bin\classes.\com\google\android\gms\R$id.class...
processing bin\classes.\com\google\android\gms\R$integer.class...
processing bin\classes.\com\google\android\gms\R$raw.class...
processing bin\classes.\com\google\android\gms\R$string.class...
processing bin\classes.\com\google\android\gms\R$style.class...
processing bin\classes.\com\google\android\gms\R$styleable.class...
processing bin\classes.\com\google\android\gms\R.class...
processing bin\classes.\com\google\example\games\mainlibproj\R$attr.class...
processing bin\classes.\com\google\example\games\mainlibproj\R$color.class...
processing bin\classes.\com\google\example\games\mainlibproj\R$drawable.class...
processing bin\classes.\com\google\example\games\mainlibproj\R$id.class...
processing bin\classes.\com\google\example\games\mainlibproj\R$integer.class...
processing bin\classes.\com\google\example\games\mainlibproj\R$raw.class...
processing bin\classes.\com\google\example\games\mainlibproj\R$string.class...
processing bin\classes.\com\google\example\games\mainlibproj\R$style.class...
processing bin\classes.\com\google\example\games\mainlibproj\R$styleable.class...
processing bin\classes.\com\google\example\games\mainlibproj\R.class...
processing archive plugins.\adcolony.jar...
ignored resource META-INF/MANIFEST.MF
processing com/immersion/content/EndpointWarp.class...
processing com/immersion/content/HapticHeaderUtils.class...
processing com/immersion/content/HeaderUtils.class...
processing com/immersion/content/Log.class...
processing com/immersion/hapticmediasdk/controllers/FileReaderFactory.class...
processing com/immersion/hapticmediasdk/controllers/HapticDownloadThread.class...
processing com/immersion/hapticmediasdk/controllers/HapticPlaybackThread.class...
processing com/immersion/hapticmediasdk/controllers/IHapticFileReader.class...
processing com/immersion/hapticmediasdk/controllers/ImmersionHttpClient.class...
processing com/immersion/hapticmediasdk/controllers/MediaController.class...
processing com/immersion/hapticmediasdk/controllers/MemoryAlignedFileReader.class...
processing com/immersion/hapticmediasdk/controllers/MemoryMappedFileReader.class...
processing com/immersion/hapticmediasdk/HapticContentSDK$SDKStatus.class...
processing com/immersion/hapticmediasdk/HapticContentSDK.class...
processing com/immersion/hapticmediasdk/HapticContentSDKFactory.class...
processing com/immersion/hapticmediasdk/HapticMediaSDKVersion.class...
processing com/immersion/hapticmediasdk/MediaPlaybackSDK.class...
processing com/immersion/hapticmediasdk/MediaTaskManager.class...
processing com/immersion/hapticmediasdk/models/BeyondHapticDataException.class...
processing com/immersion/hapticmediasdk/models/HapticFileInformation$Builder.class...
processing com/immersion/hapticmediasdk/models/HapticFileInformation.class...
processing com/immersion/hapticmediasdk/models/HttpUnsuccessfulException.class...
processing com/immersion/hapticmediasdk/models/NotEnoughHapticBytesAvailableException.class...
processing com/immersion/hapticmediasdk/utils/FileManager.class...
processing com/immersion/hapticmediasdk/utils/Log.class...
processing com/immersion/hapticmediasdk/utils/Profiler.class...
processing com/immersion/hapticmediasdk/utils/RuntimeInfo.class...
processing com/jirbo/adcolony/a$a.class...
processing com/jirbo/adcolony/a$b.class...
processing com/jirbo/adcolony/a.class...
processing com/jirbo/adcolony/b$1.class...
processing com/jirbo/adcolony/b.class...
processing com/jirbo/adcolony/c.class...
processing com/jirbo/adcolony/d$1.class...
processing com/jirbo/adcolony/d$2.class...
processing com/jirbo/adcolony/d$3.class...
processing com/jirbo/adcolony/d$4.class...
processing com/jirbo/adcolony/d$5.class...
processing com/jirbo/adcolony/d$6.class...
processing com/jirbo/adcolony/d$7.class...
processing com/jirbo/adcolony/d$8.class...
processing com/jirbo/adcolony/d.class...
processing com/jirbo/adcolony/e$1.class...
processing com/jirbo/adcolony/e$2.class...
processing com/jirbo/adcolony/e$3.class...
processing com/jirbo/adcolony/e$4$1.class...
processing com/jirbo/adcolony/e$4.class...
processing com/jirbo/adcolony/e$5.class...
processing com/jirbo/adcolony/e$6.class...
processing com/jirbo/adcolony/e.class...
processing com/jirbo/adcolony/ADCData$a.class...
processing com/jirbo/adcolony/ADCData$b.class...
processing com/jirbo/adcolony/ADCData$c.class...
processing com/jirbo/adcolony/ADCData$d.class...
processing com/jirbo/adcolony/ADCData$e.class...
processing com/jirbo/adcolony/ADCData$f.class...
processing com/jirbo/adcolony/ADCData$g.class...
processing com/jirbo/adcolony/ADCData$h.class...
processing com/jirbo/adcolony/ADCData$i.class...
processing com/jirbo/adcolony/ADCData.class...
processing com/jirbo/adcolony/f.class...
processing com/jirbo/adcolony/g.class...
processing com/jirbo/adcolony/h.class...
processing com/jirbo/adcolony/i.class...
processing com/jirbo/adcolony/ADCDownload$Listener.class...
processing com/jirbo/adcolony/ADCDownload.class...
processing com/jirbo/adcolony/j.class...
processing com/jirbo/adcolony/ADCImage.class...
processing com/jirbo/adcolony/k.class...
processing com/jirbo/adcolony/l.class...
processing com/jirbo/adcolony/n$a.class...
processing com/jirbo/adcolony/n$d.class...
processing com/jirbo/adcolony/n$b.class...
processing com/jirbo/adcolony/n$c.class...
processing com/jirbo/adcolony/n$e.class...
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processing com/jirbo/adcolony/n$i.class...
processing com/jirbo/adcolony/n$k.class...
processing com/jirbo/adcolony/n$j.class...
processing com/jirbo/adcolony/n$l.class...
processing com/jirbo/adcolony/n$m.class...
processing com/jirbo/adcolony/n$n.class...
processing com/jirbo/adcolony/n$o.class...
processing com/jirbo/adcolony/n$p.class...
processing com/jirbo/adcolony/n$q.class...
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processing com/jirbo/adcolony/n$t.class...
processing com/jirbo/adcolony/n$u.class...
processing com/jirbo/adcolony/n$v.class...
processing com/jirbo/adcolony/n$w.class...
processing com/jirbo/adcolony/n$x.class...
processing com/jirbo/adcolony/n$y.class...
processing com/jirbo/adcolony/n$z.class...
processing com/jirbo/adcolony/n$aa.class...
processing com/jirbo/adcolony/n$ab.class...
processing com/jirbo/adcolony/n$ae.class...
processing com/jirbo/adcolony/n$ac.class...
processing com/jirbo/adcolony/n$ad.class...
processing com/jirbo/adcolony/n.class...
processing com/jirbo/adcolony/o$a.class...
processing com/jirbo/adcolony/o.class...
processing com/jirbo/adcolony/p$a.class...
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processing com/jirbo/adcolony/m$1.class...
processing com/jirbo/adcolony/m$2.class...
processing com/jirbo/adcolony/m.class...
processing com/jirbo/adcolony/q.class...
processing com/jirbo/adcolony/AdColony$1.class...
processing com/jirbo/adcolony/AdColony$2$1.class...
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processing com/jirbo/adcolony/AdColony$a.class...
processing com/jirbo/adcolony/AdColony.class...
processing com/jirbo/adcolony/AdColonyAd.class...
processing com/jirbo/adcolony/AdColonyAdAvailabilityListener.class...
processing com/jirbo/adcolony/AdColonyAdListener.class...
processing com/jirbo/adcolony/AdColonyBrowser$1.class...
processing com/jirbo/adcolony/AdColonyBrowser$2.class...
processing com/jirbo/adcolony/AdColonyBrowser$a.class...
processing com/jirbo/adcolony/AdColonyBrowser$b.class...
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processing com/jirbo/adcolony/AdColonyBrowser.class...
processing com/jirbo/adcolony/AdColonyException.class...
processing com/jirbo/adcolony/AdColonyFullscreen.class...
processing com/jirbo/adcolony/AdColonyIAPEngagement.class...
processing com/jirbo/adcolony/AdColonyInterstitialAd$1.class...
processing com/jirbo/adcolony/AdColonyInterstitialAd$2.class...
processing com/jirbo/adcolony/AdColonyInterstitialAd.class...
processing com/jirbo/adcolony/AdColonyNativeAdListener.class...
processing com/jirbo/adcolony/AdColonyNativeAdMutedListener.class...
processing com/jirbo/adcolony/AdColonyNativeAdView$1.class...
processing com/jirbo/adcolony/AdColonyNativeAdView$2.class...
processing com/jirbo/adcolony/AdColonyNativeAdView$a$1.class...
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processing com/jirbo/adcolony/AdColonyNativeAdView$b.class...
processing com/jirbo/adcolony/AdColonyNativeAdView.class...
processing com/jirbo/adcolony/AdColonyOverlay$1.class...
processing com/jirbo/adcolony/AdColonyOverlay.class...
processing com/jirbo/adcolony/AdColonyV4VCAd$1.class...
processing com/jirbo/adcolony/AdColonyV4VCAd$2.class...
processing com/jirbo/adcolony/AdColonyV4VCAd.class...
processing com/jirbo/adcolony/AdColonyV4VCListener.class...
processing com/jirbo/adcolony/AdColonyV4VCReward.class...
processing com/jirbo/adcolony/AdColonyVideoAd.class...
processing com/jirbo/adcolony/AdColonyVideoDialog.class...
processing com/jirbo/adcolony/s.class...
processing com/jirbo/adcolony/t$a.class...
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processing com/jirbo/adcolony/u$a.class...
processing com/jirbo/adcolony/u.class...
processing com/jirbo/adcolony/v.class...
processing com/jirbo/adcolony/w.class...
processing com/jirbo/adcolony/ADCStorage.class...
processing com/jirbo/adcolony/x.class...
processing com/jirbo/adcolony/y.class...
processing com/jirbo/adcolony/z.class...
processing com/jirbo/adcolony/aa$a.class...
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processing com/jirbo/adcolony/ad.class...
processing com/jirbo/adcolony/ADCVideo$1.class...
processing com/jirbo/adcolony/ADCVideo$2.class...
processing com/jirbo/adcolony/ADCVideo$3.class...
processing com/jirbo/adcolony/ADCVideo$a.class...
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processing com/jirbo/adcolony/ae$1.class...
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processing com/jirbo/adcolony/ag.class...
processing com/jirbo/adcolony/ah.class...
processing com/jirbo/adcolony/ai.class...
processing com/jirbo/adcolony/BuildConfig.class...
processing com/jirbo/adcolony/aj.class...
processing com/jirbo/adcolony/R$anim.class...
processing com/jirbo/adcolony/R$attr.class...
processing com/jirbo/adcolony/R$layout.class...
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processing rrrrrr/cccrrr.class...
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proces