I had a 10.8.0 Portal installation that worked great then I tried the 10.8.1 Portal upgrade and it failed. I then returned it back to 10.8.0 Portal and now I get this using the SAML-tracer error_description: Unable to login using Idp Unable to validate SAML response in the Parameters. This is the GET /home/accountswitcher-callback.html#error=Invalid_SAMLResponse&error_description=Unable%20to%20login%20using%20Idp%20Unable%20to%20validate%20SAML%20response. I have re-installed the certificates on the Portal and manually added to the current computers Windows Certificate Store with nothing helping. It looks like all the other functions when I log in with a Built In user. Does anyone have any ideas on what could be the issue?