No group found for service while migrating to v201502 from 201406

[amber.k...@sokrati.com]

trace:

java.lang.NullPointerException: No group found for service: v201502.CampaignServicejava.lang.NullPointerException: No group found for service: v201502.CampaignService

at com.google.api.ads.adwords.lib.conf.AdWordsApiConfiguration.getServiceUrlGroup(AdWordsApiConfiguration.java:64)

at com.google.api.ads.adwords.lib.client.AdWordsServiceDescriptor.getEndpointAddress(AdWordsServiceDescriptor.java:82)

at com.google.api.ads.common.lib.factory.helper.BaseAdsServiceClientFactoryHelper.createAdsServiceClient(BaseAdsServiceClientFactoryHelper.java:74)

at com.google.api.ads.common.lib.factory.AdsServiceClientFactory.getServiceClient(AdsServiceClientFactory.java:75)

at com.google.api.ads.common.lib.factory.BaseAdsServiceClientFactory.getServiceClientAsInterface(BaseAdsServiceClientFactory.java:79)

at com.google.api.ads.common.lib.factory.BaseServices.get(BaseServices.java:60)

please help.