【unity】AdMob導入済みプロジェクトにアドフリくん入れたらビルドエラー already added: Landroid/support/v4/〜

タイトルの通り。

すでにAdMobを導入済みのUnityプロジェクトに、アドフリくんSDKを入れたらビルドエラーするようになった。(Unity Cloud Build)

環境

Mac OS X El Capitan 10.11.6
Unity 5.5.0b4
adfurikunSDK_Unity_2_7
- 導入時、adfurikunPlugin_nogooglelibの方のunitypackageを使った。

エラー内容

200: [Unity] Uncaught translation error: java.lang.IllegalArgumentException: already added: Landroid/support/v4/accessibilityservice/AccessibilityServiceInfoCompat;
201: [Unity] Uncaught translation error: java.lang.IllegalArgumentException: already added: Landroid/support/v4/accessibilityservice/AccessibilityServiceInfoCompat$AccessibilityServiceInfoIcsImpl;
202: [Unity] Uncaught translation error: java.lang.IllegalArgumentException: already added: Landroid/support/v4/accessibilityservice/AccessibilityServiceInfoCompat$AccessibilityServiceInfoJellyBeanMr2;
203: [Unity] Uncaught translation error: java.lang.IllegalArgumentException: already added: Landroid/support/v4/accessibilityservice/AccessibilityServiceInfoCompat$AccessibilityServiceInfoStubImpl;
204: [Unity] Uncaught translation error: java.lang.IllegalArgumentException: already added: Landroid/support/v4/accessibilityservice/AccessibilityServiceInfoCompat$AccessibilityServiceInfoVersionImpl;
205: [Unity] Uncaught translation error: java.lang.IllegalArgumentException: already added: Landroid/support/v4/accessibilityservice/AccessibilityServiceInfoCompatIcs;
206: [Unity] Uncaught translation error: java.lang.IllegalArgumentException: already added: Landroid/support/v4/accessibilityservice/AccessibilityServiceInfoCompatJellyBeanMr2;
207: [Unity] Uncaught translation error: java.lang.IllegalArgumentException: already added: Landroid/support/v4/app/ActionBarDrawerToggle;
208: [Unity] Uncaught translation error: java.lang.IllegalArgumentException: already added: Landroid/support/v4/app/ActionBarDrawerToggle$1;
209: [Unity] java.lang.RuntimeException: Translation has been interrupted
210: [Unity] Caused by: java.lang.InterruptedException: Too many errors