AdWords API Exception without ognl message on mutate

http://schemas.xmlsoap.org/soap/envelope/"; xmlns:xsd="http://www.w3.org/2001/XMLSchema"; xmlns:xsi="http:// www.w3.org/2001/XMLSchema-instance">http://schemas.xmlsoap.org/soap/actor/next"; soapenv:mustUnderstand="0" xmlns:ns1="https://adwords.google.com/api/ adwords/cm/v200909">***

AdWords API Exception without ognl message on mutate

While calling mutate on AdGroupCriterionServiceInterface, I get a strange exception without any information. lib: adwords-api-6.0.0.jar java version "1.5.0_20" [20 Nov 2009 10:32:25,691 - DEBUG] http://schemas.xmlsoap.org/soap/envelope/"; xmlns:xsd="http://www.w3.org/2001/XMLSchema"; xmlns:xsi