Error accessing additional LoginModule (Karaf 2.2.6)

[Rainey]

I added a second LoginModule to Karaf (2.2.6). So far so good.

karaf@root> jaas:realms
Index Realm                Module Class
    1 karaf                org.apache.karaf.jaas.modules.properties.PropertiesLoginModule
    2 karaf                org.apache.karaf.jaas.modules.jdbc.JDBCLoginModule


But only the first one seems to work:

karaf@root> jaas:users
User Name            Role
karaf                admin


When I select the second realm and do a jaas:users I get this exception here:
Failed to resolve backing engine for realm:karaf and moudle:org.apache.karaf.jaas.boot.ProxyLoginModule

("moudle" is not my typo)