This is weird.

Updated SSPR to version 3.3.1.2 b132 r38704

I try to login directly and all I get is this (after entering userid/password):

HTTP 500

An error has occurred. If this error occurs repeatedly please contact your helpdesk.
Followed by a white box with some errors in it:

Code:
            javax.servlet.ServletException: javax.servlet.ServletException: Filter execution threw an exceptionpassword.pwm.http.filter.SessionFilter.processFilter(SessionFilter.java:102)password.pwm.http.filter.AbstractPwmFilter.doFilter(AbstractPwmFilter.java:62)org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)password.pwm.http.filter.AbstractPwmFilter$PwmFilterChain.doFilter(AbstractPwmFilter.java:100)password.pwm.http.filter.ApplicationModeFilter.processFilter(ApplicationModeFilter.java:69)password.pwm.http.filter.AbstractPwmFilter.doFilter(AbstractPwmFilter.java:62)org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)password.pwm.http.filter.RequestInitializationFilter.doFilter(RequestInitializationFilter.java:94)org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)password.pwm.http.filter.GZIPFilter.doFilter(GZIPFilter.java:68)org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:612)org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:503)java.lang.Thread.run(Thread.java:809)
If I click Continue, then I get:
SSPR 5034

The browser session is invalid or has expired. Please try again. { 5034 ERROR_INVALID_FORMID }
Any ideas on what the underlying cause is?