gets an ClassCastException on using forceId and forceIdIndex in t:HtmlSelectOneRadio along with Myfaces and facelets

I get This exception in two places. once on rendering the radio buttons and agian here(org.apache.myfaces.component.html.ext.HtmlSelectOneRadio.validateValue(HtmlSelectOneRadio.java:64))

here is the error stack trace.

java.lang.ClassCastException
at org.apache.myfaces.component.html.ext.HtmlSelectOneRadio.validateValue(HtmlSelectOneRadio.java:64)
at javax.faces.component.UIInput.validate(UIInput.java:269)
at javax.faces.component.UIInput.processValidators(UIInput.java:144)
at javax.faces.component.UIData.process(UIData.java:623)
at javax.faces.component.UIData.processColumnChildren(UIData.java:607)
at javax.faces.component.UIData.processValidators(UIData.java:496)
at org.apache.myfaces.component.html.ext.HtmlDataTableHack.processValidators(HtmlDataTableHack.java:114)
at org.apache.myfaces.component.html.ext.HtmlDataTable.processValidators(HtmlDataTable.java:220)
at javax.faces.component.UIForm.processValidators(UIForm.java:68)
at javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:607)
at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:142)
at org.apache.myfaces.lifecycle.LifecycleImpl.processValidations(LifecycleImpl.java:259)
at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:76)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:106)
at org.apache.myfaces.webapp.MyFacesServlet.service(MyFacesServlet.java:74)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1006)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:28)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at org.apache.myfaces.component.html.util.ExtensionsFilter.doFilter(ExtensionsFilter.java:123)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at de.mindmatters.faces.spring.support.RequestHandledFilter.doFilter(RequestHandledFilter.java:150)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at com.bmw.gss.client.dms.DmsFilter.doFilter(DmsFilter.java:39)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:137)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6724)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3764)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2644)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:219)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:178)