Shoot I completely forgot about autosave... I normally have the game autosave after each upgrade but I added the save system last minute this time and it slipped my mind to add that. Really sorry you had to start over, def not intended at all.
As for the initial freeze though, I can't recreate that at all. You should be perfectly able to jump and use the aura ability at the same time. Could you give some more details about what else was happening when it froze? Were the beast or platforms in range when you toggled the ability?