ajax4jsf afterphase,jsf 2 - Migrating JSF 1.1 with Ajax4jsf 1.x to JSF 2 - Stack Overflow

We are migrating JSF 1.1 (MyFaces) project to JSF 2. The idea is to migrate periodically by keeping both JSP and XHTML together for some time. We use many ajax4jsf-1.1.1 tags in JSP pages. We don't use RichFaces. After configuring the system to JSF 2 (with all config changes mentioned in tutorial by Balusc) When tried to access the JSP page with ajax4jsf.jar in classpath, we get an exception:

Caused by: java.lang.IllegalStateException: setViewHandler may not be executed after a lifecycle request has been completed

at org.apache.myfaces.application.ApplicationImpl.setViewHandler(ApplicationImpl.java:853)

at org.ajax4jsf.framework.ajax.InitPhaseListener.beforePhase(InitPhaseListener.java:92)

at org.apache.myfaces.lifecycle.PhaseListenerManager.informPhaseListenersBefore(PhaseListenerManager.java:76)

at org.apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:131)

It looks ajax4jsf.jar is not compatible with JSF 2. Looks some issue with LifeCycle configuration.

Is there any way we can make a4j work with JSF 2 JSPs? I know when we use XHTML we don't need all this.