Finally removed the "bug" with the bad encryption; It was a known anomaly in the historical enigma machine that I oversaw. So I added this "historical bug" as a feature to the enigma. Thanks to the author of the java script version of the enigma machine for the hint :)

.idea/dictionaries/vanitas.xml

@@ -2,6 +2,8 @@
   <dictionary name="vanitas">
     <words>
       <w>plugboard</w>
+      <w>ringsetting</w>
+      <w>ringsettings</w>
     </words>
   </dictionary>
 </component>

app/build.gradle

@@ -8,8 +8,8 @@ android {
         applicationId "de.vanitasvitae.enigmandroid"
         minSdkVersion 15
         targetSdkVersion 20
-        versionCode 1
-        versionName "1.0"
+        versionCode 5
+        versionName "17.02.2015-beta"
     }
     buildTypes {
         release {

app/src/main/AndroidManifest.xml

@@ -1,8 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="de.vanitasvitae.enigmandroid"
-    android:versionCode="00004"
-    android:versionName="11.02.2015-beta">
+    package="de.vanitasvitae.enigmandroid">
 
     <application
         android:allowBackup="true"

app/src/main/java/de/vanitasvitae/enigmandroid/Enigma.java

@@ -16,6 +16,7 @@ public class Enigma
 	private Rotor r3;
     //Slot for the reflector
 	private Rotor reflector;
+    private boolean anomaly;
     //Standard configuration (rotors 1-3, reflector B, all three rotors set to position 1)
 	private static final int[] STANDARD_CONFIGURATION = {1,2,3,2,1,1,1};
 
@@ -56,7 +57,7 @@ public class Enigma
 
 	/**
 	 * Perform crypto on char.
-	 * Beforehand rotate rotors..
+	 * Beforehand rotate rotors. Also implement the rotor anomaly.
 	 * @param k input char
 	 * @return output char
 	 */
@@ -64,9 +65,14 @@ public class Enigma
 	{
 		//Rotate rotors
 		r1.incrementCounter();
-		if(r1.isAtTurnoverPosition()) {
+		if(r1.isAtTurnoverPosition() || this.anomaly)
+        {
             r2.incrementCounter();
-            if (r2.isAtTurnoverPosition()) {
+            //Handle Anomaly
+            this.anomaly = false;
+            if(r2.getCounter() == r2.getTurnOver()-1) this.anomaly=true;
+            if (r2.isAtTurnoverPosition())
+            {
                 r3.incrementCounter();
             }
         }

app/src/main/java/de/vanitasvitae/enigmandroid/Rotor.java

@@ -1,7 +1,7 @@
 package de.vanitasvitae.enigmandroid;
 
 /**
- * Klasse, die eine Walze der Enigmamaschine representiert (I-V,A-C)
+ * Class representing a rotor of the Enigma machine (I-V,A-C)
  * @author vanitas
  *
  */
@@ -39,8 +39,7 @@ public class Rotor
     //Atributes of the rotor
 	private Integer[] rotor;        //choose one of rotor1-5
 	private Integer[] rrotor;       //choose one of backwardsRotor1-5
-	private int ringsetting;        //http://people.physik.hu-berlin.de/~palloks/js/enigma/enigma-u_v20.html
-                                    //My fault?
+	private int ringsetting;
     private int turnOver;
 	private int counter;
 	private String name;
@@ -182,6 +181,11 @@ public class Rotor
         return this.getCounter() == this.turnOver;
     }
 
+    public int getTurnOver()
+    {
+        return this.turnOver;
+    }
+
     /**
      * Return the name of the rotor
      * @return name

app/src/main/res/values/strings.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
 
-    <string name="version" translatable="false">0.1-11.02.2015</string>
+    <string name="version" translatable="false">0.1-17.02.2015</string>
     <string name="app_name">EnigmAndroid</string>
     <string name="action_version">Version</string>
     <string name="action_reset">Reset</string>