Blegh, sorry that it's being such a pain for you to get this game running... I had high hopes it would be fixable by finding the offending shader to stop the crashing, but now you get all these weird artifacts in-game as well. Does changing the Graphics settings in the PA settings screen have any effect? In any case, regarding the logs for Coherent, PA has a parameter called "--coherent-log-level", so if you start PA as Code: ./PA --coherent-log-level TRACE then it should show a heck of a lot more. (See ./PA --help for the other values for that parameter)
@DeathByDenim, thanks for trying to help, but I've lost the interest in trying to get it to work. I can't say I'm disappointed though because this exactly the kind of response I expected from the devs.