I upgraded to the latest plugin this morning (2.5). Now I get the following error when I try to test the connection to my cloud or to create a cloud instance:

javax.servlet.ServletException: com.google.inject.CreationException: Guice creation errors:

1) org.jclouds.rest.config.SyncToAsyncHttpApiProvider<org.jclouds.openstack.keystone.v2_0.AuthenticationApi, A> cannot be used as a key; It is not fully specified.

A full log is attached.

I had previous had a networking issue that prevented Jenkins from connecting to spawned instanced, but before this upgrade it would spawn VMs and test connection worked fine.