It has been a very long time since I tested the Blood questline, but I do remember it was verified to work and ERAS didn't change any of the original City of Abandoned Ships script version of that quest.
If you email me your ERAS save file, to chezjfrey@hotmail.com, I can compare the script code checks to continue that quest with the data and try to determine what is preventing the progression. I will probably have to also review the old playthrough guides too, to refresh my memory of how that is supposed to go, since it's been so long for me.
Viewing post in Peter Blood questline
thank you for the response. I did end up restarting and got passed that and then got stuck with the npc nattal I think his name was. Did the same as bishop. Just stood in place no movement could not interact. I restarted again and got through the quest. I’ll get you a save file of it. I think it happened because I did the quest in the wrong order. I looked up a guide and followed it to the letter and it worked fine