Maybe the reason for the error is the same as described here https://steamcommunity.com/app/238090/discussions/1/458604254427614083
I have this same issue as well with the same error messages. I have attached a log file:
System Information:
OS: Manjaro
GPU: RX 580 8GB
Driver/LLVM version: Mesa 18.3.3
Kernel version: 4.20.11-1.-MANJARO
Proton version: 3.16-4
https://gist.github.com/Simmonz/7a6eb7ee79fcb5deee2a12633f5d8a58
Maybe the reason for the error is the same as described here https://steamcommunity.com/app/238090/discussions/1/458604254427614083
Yep, no error windows once you move the library path, however the game never launches. (Runs for about 10 seconds then exits, no window or anything)
proton 3.7-5x1 2018-09
https://gist.github.com/daasuharo/d83c92ac04a9bd0c5edfc359c3c5a4de
Proton 3.7-5
Two error messages
error -- path not found
error launching the game: (0x000000050) - Access denied.