I'm on patch 1.2 and I have the same problem. I left Engwith Digsite and need to get to Port Maje to complete the quest and do anything else. However, I can't get through Whakura Pass and can't see another way how to get to Port Maje (or anywhere).
Is there another way to get to Port Maje or is my game broken and requires a restart?
Thanks for any help.