Upgraded original RothenburgAR to Unity version 2017.4.5f1 (and upgrading from standalone vuforia to the version integrated in unity)

Assets/Plugins/Android/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.unity3d.player"
+	android:installLocation="preferExternal"
+	android:theme="@android:style/Theme.NoTitleBar"
+    android:versionCode="1"
+    android:versionName="1.0">
+    <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="22" />
+    <uses-feature android:name="android.hardware.camera" />
+    <supports-screens
+        android:smallScreens="true"
+        android:normalScreens="true"
+        android:largeScreens="true"
+        android:xlargeScreens="true"
+        android:anyDensity="true"/>
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    
+    <application
+        android:icon="@drawable/app_icon"
+        android:label="@string/app_name"
+        android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
+        android:debuggable="false">
+        <activity android:name="com.unity3d.player.UnityPlayerNativeActivity"
+                  android:label="@string/app_name">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+            <meta-data android:name="unityplayer.UnityActivity" android:value="true" />
+            <meta-data android:name="unityplayer.ForwardNativeEventsToDalvik" android:value="false" />
+        </activity>
+        <activity android:name="com.unity3d.player.VideoPlayer"
+                  android:label="@string/app_name"
+                  android:screenOrientation="portrait"
+                  android:configChanges="fontScale|keyboard|keyboardHidden|locale|mnc|mcc|navigation|orientation|screenLayout|screenSize|smallestScreenSize|uiMode|touchscreen">
+        </activity>
+        <!--
+            To support devices using the TI S3D library for stereo mode we must 
+            add the following library.
+            Devices that require this are: ODG X6 
+        -->
+        <uses-library android:name="com.ti.s3d" android:required="false" />
+        <!--
+            To support the ODG R7 in stereo mode we must add the following library.
+        -->
+        <uses-library android:name="com.osterhoutgroup.api.ext" android:required="false" />
+    </application>
+</manifest>
+
+<!-- android:installLocation="preferExternal" -->

Assets/Plugins/Android/AndroidManifest.xml.meta

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+guid: d3ce1b30045b37e4ca835ba9ca25673a
+timeCreated: 1486470568
+licenseType: Pro
+TextScriptImporter:
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Plugins/Android/src.meta

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+fileFormatVersion: 2
+guid: 0055c3b07a4eaae458876dfabbc152f6
+folderAsset: yes
+timeCreated: 1492096646
+licenseType: Free
+PluginImporter:
+  serializedVersion: 2
+  iconMap: {}
+  executionOrder: {}
+  isPreloaded: 0
+  isOverridable: 0
+  platformData:
+    data:
+      first:
+        Android: Android
+      second:
+        enabled: 1
+        settings: {}
+    data:
+      first:
+        Any: 
+      second:
+        enabled: 0
+        settings: {}
+    data:
+      first:
+        Editor: Editor
+      second:
+        enabled: 0
+        settings:
+          DefaultValueInitialized: true
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Plugins/Android/src/com.meta

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+fileFormatVersion: 2
+guid: 47c84b0e7dddbb24b8c127d6fca08c2b
+folderAsset: yes
+timeCreated: 1492096646
+licenseType: Free
+DefaultImporter:
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Plugins/Android/src/com/vuforia.meta

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+fileFormatVersion: 2
+guid: b9fbfeb63399a9d46877dafeae58dc9d
+folderAsset: yes
+timeCreated: 1492096646
+licenseType: Free
+DefaultImporter:
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: