AjaxTilesView does not work with Spring 3 and Tiles 2.1.2

The AjaxTilesView is incompatible with the Tiles support in Spring 3. The Tiles version in Spring 3 was upgraded to 2.1.2 which has a significantly different API then 2.0.x.

The relevant stack trace for the 2.0.7 AjaxTilesView with Spring 3 and Tiles 2.1.2 is:
java.lang.NullPointerException
at org.springframework.js.ajax.tiles2.AjaxTilesView.renderMergedOutputModel(AjaxTilesView.java:92)
at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1062)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:709)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:617)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:526)
...