Took me a while to get to that top door, too. You will need to go through a round-about way...like find a small path break on the right side and it will take you to a beautiful grassy area into the next section. LOL felt like a castle wall I was following around on.
Anyway...Indy, I got a freeze while in the boss fight @ Melas Tyber went down and I was able to revive him, but before anything else...game froze and I had to do a hard reset had to go back a ways to do over again cuz didn't save as often as I should have Anyway, when I definitely lost again...the whole party went kaput and no freezing, just the regular "game over". I've had Tyberia KO before throughout the game with reviving him and no problems until Melas school.
Have to do more leveling before I try it for the 3rd time and going to take Baba this time Raven is staying home and pouting about it