Calibration tool crashes at start

Hi, I tried to run the calibration tool on android and it crashes every time at startup.

I'm using the version 6.5.23 

01-01 17:56:22.267 1316-1316/? E/AndroidRuntime: FATAL EXCEPTION: main                                                  Process: com.vuforia.eyewear.Calibration, PID: 1316                                                  java.lang.ClassCastException: com.vuforia.Device cannot be cast to com.vuforia.EyewearDevice                                                      at com.vuforia.eyewear.Calibration.Calibration.isStereoStretched(Calibration.java:666)                                                      at com.vuforia.eyewear.Calibration.Calibration.updateApplicationStatus(Calibration.java:928)                                                      at com.vuforia.eyewear.Calibration.Calibration.access$200(Calibration.java:62)                                                      at com.vuforia.eyewear.Calibration.Calibration$LoadTrackerTask.onPostExecute(Calibration.java:291)                                                      at com.vuforia.eyewear.Calibration.Calibration$LoadTrackerTask.onPostExecute(Calibration.java:276)                                                      at android.os.AsyncTask.finish(AsyncTask.java:667)                                                      at android.os.AsyncTask.-wrap1(AsyncTask.java)                                                      at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:684)                                                      at android.os.Handler.dispatchMessage(Handler.java:102)                                                      at android.os.Looper.loop(Looper.java:154)                                                      at android.app.ActivityThread.main(ActivityThread.java:6823)                                                      at java.lang.reflect.Method.invoke(Native Method)                                                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1557)                                                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1445)