No static field MULTI_BARCODE

Hi, I'm a newbie here and have just started playing around with the "samples-emdkforandroid-7_0-master", I have managed to get the BarcodeSample1 to run on a TC51 with no probs but am having issues with the MultiBarcodeSample1.  When I try to run it on the scanner it opens then closes saying "stopped".

I've attached the console output but the key entry is

E/AndroidRuntime: FATAL EXCEPTION: main

    Process: com.symbol.multibarcodesample1, PID: 19240

    java.lang.NoSuchFieldError: No static field MULTI_BARCODE of type Lcom/symbol/emdk/barcode/ScannerConfig$ScanMode; in class Lcom/symbol/emdk/barcode/ScannerConfig$ScanMode; or its superclasses (declaration of 'com.symbol.emdk.barcode.ScannerConfig$ScanMode' appears in /system/framework/com.symbol.emdk.jar)

Excuse me if I'm being a bit thick but would be very grateful if you would be kind enough to input on this, many thanks