New warning message after upgrade from 3.2.1.1 to 3.3 on Windows (MSI Installer)

[Rod Widdowson]

In case anyone else is looking I’ve been through all three of these and in each case a String should have been expected.  So I'm
slightly stumped.

Is there any other place that this might be being passed into a bean which might expect a Boolean (or a Predicate)? Potentially
indirectly?

My best suggestion right now would be to selectively turn up debugging in the modules around these three cases and see whether that
helps trace this down
(net.shibboleth.idp.attribute.filter, net.shibboleth.idp.saml.relyingparty, net.shibboleth.idp.profile)…

In as much as I have one I'd suggest that you look at saml-nameid.xml since there is at least an activation  condition in the loop.