Spring Social - Could not generate CGLIB subclass

I am getting the following error when attempting to navigate to the /connect endpoint of the spring social web module.

What I am getting:

[Request processing failed; nested exception is 
org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name 'scopedTarget.connectionRepository' 
defined in ServletContext resource [/WEB-INF/appContext.xml]: 
Initialization of bean failed; nested exception is 
org.springframework.aop.framework.AopConfigException: 
Could not generate CGLIB subclass of class 
[class org.springframework.social.connect.jdbc.JdbcConnectionRepository]: 
Common causes of this problem include using a final class or a non-visible class; 
nested exception is java.lang.IllegalArgumentException: 
Superclass has no null constructors but no arguments were given]

Relevant portions of web.xml:

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>
        /WEB-INF/appContext.xml
    </param-value>
</context-param>

<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<servlet>
    <servlet-name>mvc-dispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value></param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

Relevant portion of appContext.xml:

<bean id="connectionFactoryLocator" 
          class="org.springframework.social.connect.support.ConnectionFactoryRegistry">
        <property name="connectionFactories">
            <list>
                <bean class="org.springframework.social.facebook.connect.FacebookConnectionFactory">
                    <constructor-arg value="${facebook.clientId}" />
                    <constructor-arg value="${facebook.clientSecret}" />                
                </bean>
            </list>
        </property>
    </bean>

    <bean id="usersConnectionRepository" 
          class="org.springframework.social.connect.jdbc.JdbcUsersConnectionRepository">
        <constructor-arg ref="dataSource" />
        <constructor-arg ref="connectionFactoryLocator" />
        <constructor-arg ref="textEncryptor" />
    </bean>

    <bean id="connectionRepository" factory-method="createConnectionRepository" 
          factory-bean="usersConnectionRepository" scope="request">
        <constructor-arg value="#{request.userPrincipal.name}" />
        <aop:scoped-proxy proxy-target-class="false" />
    </bean>

Thank you for any responses.