I'm not getting the game to start, I get a black screen then a white screen, the computer tells me to wait or stop the process and I get a notification error 0x0524cd00 and 0x02a628d5 both stating referenced memory at specifically 0x0524cd00 and 0x00000000

Any thoughts on how to fix these issues? Currently updating my graphics drivers and any other drivers I can find to see if it fixes the issue.

Getting different errors at different game startups, could it be connected to the 1.0.3 patch?

Try disabling your antivirus or security software, including Windows Defender.

Seems the newest patch / hotfix that just came out sorted the problem

I also have a crash when launching the game since I have the 1.0.4 version. It was really fine before (even if loading time were taking soo long). Now I can't even launch the game and I don't know how I could revert the game version to 1.0.3.
And yes I add an exception in my antivirus for Pathfinder.

There are now two 1.0.4 releases, so you need to be sure you are using 1.0.4 instead of 1.0.4.

Same here. Game worked fine yesterday (except took ages to load), but now with 1.0.4 I get a Unity box full of text that comes up with a progress bar, fills, then bamf I'm back to the GOG menu.

Uh.... 1.0.4 certainly removed ALL bugs from the game since I can no longer experience them