Problem Setting Up EAP-TLS 802.1x through Network Manager

Following these directions
I am trying to setup 802.1x using TLS on my RHEL6 machine but I am unable to apply any settings. After I enter user certificate, CA certificate, private key, etc. the apply button remains disabled and there is no feedback as to what is wrong and/or missing.

Is there any way to find out what parameter is incorrect or missing?

When I use

# openssl verify /path2cert/mycert.crt

It returns OK