armagan 说:
Hi brulleks,
Buttons being blanked out is probably because you have reached the limit for party members.
I'm afraid I don't think this was the case.
I was on the party map and had just completed a battle. I opened up the party screen as I had been told that some members were ready to upgrade, but the button was blanked out even for those men that were ready to upgrade.
I closed the screen and opened it again, but the same thing occurred.
I then travelled to a nearby town and, without having changed my character stats or party members at all since the battle, I tried again and was allowed to upgrade them without a problem. I do not know if there was something else that may have been affecting my limit though.
I will let you know if it happens again. I have played for a few hours since then without the problem re-occurring, though, so hopefully it was a one-off.