There should be a file called Osirislog in the same folders as your editor.
It won't make much sense to you if you're not familiar with Osiris syntax, but it may be of some use in trying to figure out what happened.
Can you check if there's any reference to the following string in it?
da072fe7-fdd5-42ae-9139-8bd4b9fca406
Did you make any changes to Story at all, like adding a character creation script?
