Hi,
I am updated adwords api version to v201609 and also guava version to 20. But I am getting this error
Dec 22, 2016 9:25:19 AM com.google.api.server.spi.SystemService invokeServiceMethod
SEVERE: exception occurred while calling backend method
java.lang.NoSuchMethodError: com.google.common.base.Preconditions.checkArgument(ZLjava/lang/String;Ljava/lang/Object;)V
at com.google.api.ads.adwords.jaxws.AdWordsJaxWsHeaderHandler.setHeaders(AdWordsJaxWsHeaderHandler.java:91)