Favored Prestige Class Not Working With Eldritch Knight

[ofstatic]

In Hero Lab when I build a 1 Fighter/5 Wizard/1 Eldritch Knight with the feat Favored Prestige Class with Eldritch Knight selected there is no drop down menu for favored class bonus in the classes tab.

In addition, when I try to select the feat Prestigious Spellcaster it does not appear as a valid option to pick saying I do not meet to requirement of having the feat Favored Prestige Class.

Any insight would be appreciated