Blanck Screen on update info or add more options on ivr

I have a problem with freepbx at this moment, in the ivr modules when i try to add more options to ivr page reloads but in a blank scree, is the same when i try to update the follow me options but in the follow me case i use to reload previus page and apply changes in ivr i can not do this, my system is trixbox 2.4.2 and freepbx 2.6