Spring Web Flow Support broken

After issuing
web flow
there is the following configuration in webflow-config.xml:

<!-- Places the ConversionService in request scope so it's available during request processing -->
<bean id="conversionServiceExposingInterceptor" class="org.springframework.web.servlet.handler.ConversionServiceExposingInterceptor">
<constructor-arg ref="applicationConversionService" />
</bean>

This does not work. I added

<bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean" />

to webmvc-config.xml and change the config above to

<bean id="conversionServiceExposingInterceptor" class="org.springframework.web.servlet.handler.ConversionServiceExposingInterceptor">
<constructor-arg ref="conversionService" />
</bean>

<mvc:annotation-driven /> registers a ConversionService but I am not sure about the bean name.