NoSuchMethod-Exception in WNSService() Constructor

[mglmgl]

Hi

i'm using java-wns version 1.2.
I get the following exception while sending a WNS-Notification:

java.lang.NoSuchMethodError: org.codehaus.jackson.map.ObjectMapper.constructType(Ljava/lang/reflect/Type;)Lorg/codehaus/jackson/type/JavaType;
at org.codehaus.jackson.jaxrs.JacksonJsonProvider.readFrom(JacksonJsonProvider.java:419)
at com.sun.jersey.api.client.ClientResponse.getEntity(ClientResponse.java:553)
at com.sun.jersey.api.client.ClientResponse.getEntity(ClientResponse.java:506)
at ar.com.fernandospr.wns.client.WnsClient.refreshAccessToken(WnsClient.java:71)
at ar.com.fernandospr.wns.client.WnsClient.(WnsClient.java:40)
at ar.com.fernandospr.wns.WnsService.(WnsService.java:38)