DPWWA2015E A forms SSO authentication request would have been dispatched to a different junction than the login request. The request has been aborted.

Newer versions of ISAM can be picky about the forms they sign into. While a version 6 is happy to post to a page that includes resources from external servers (such as graphics and javascript), ISAM 9 will throw this exception.

One solution is to remove those links to external resources so ISAM will agree to post to the form