I decided to move my old save file 
newer version and every time I get a little far into it this is what happens
And I said to do this before I started the secret boss fight She double checked if it was the boss fight
26 days ago(+1)
well, I don’t mind starting all over. Thanks for the fun and also too. I can’t wait to fight that boss. Again, I really like to update graphics
26 days ago(+1)
I just ran into the enemy is undefined problem on a new save and it happened because of an interaction between Demonic Decay and Embodiment of Baal resulting in the opponent having 0 hp before I could attack and it not ending the battle. After attacking it popped up the enemy is undefined and I couldn't continue. I hade to close the program.