ADManager after logon directed to /j_security_check page

ADManager after logon directed to /j_security_check page

When users try to logon to our ADManager instance they see the user logon webpage and enter credentials. They are then sent to a j_security_check page with the following messages.
Unable to connect
Sorry. The requested page could not be loaded. Some possible reasons could be:
Direct access to the URL is restricted
Accessing the product from multiple tabs

We are running build 6351 now. We have a F5 load balancer in front of this Windows 2012 server so users can use our *.domain.com ssl certificate to access the website for SSL.

Thoughts about this error? I have seen a few others post in the past with similar issues but no responses except for support asking for a new ticket to be opened. We have opened a ticket in December for this same issue but it was never resolved. 

Ideas?

                New to ADSelfService Plus?