You need to attach game log file and your system specs via github gist to this issue. You can obtain log file if you running Proton with user settings, which you can find in your /home directory. Path to this folder is something like this /home/arzardk/.steam/steam/steamapps/common/Proton 3.7. In this folder you find file called user_settings.example.py or something similar. Just rename it to user_settings.py and run your game again. You can find log file in your /home directory after that.
Thanks for the info. I added the gist link to my original post.
PidGen.dll does exist:
$ cd ~/.var/app/com.valvesoftware.Steam/data/Steam/steamapps/common/Age Of Empires 3/bin
$ ls -l | grep -i pid
-rwxr-xr-x 1 user user 95248 22. Aug 14:51 mgspid.dll
-rwxr-xr-x 1 user user 92944 22. Aug 14:52 mgspidx.dll
-rwxr-xr-x 1 user user 82968 22. Aug 14:52 mgspidy.dll
-rwxr-xr-x 1 user user 48656 22. Aug 14:52 PidGen.dll
-rwxr-xr-x 1 user user 31040 22. Aug 14:50 PidGenX.dll
-rwxr-xr-x 1 user user 30912 22. Aug 14:49 pidgeny.dll
I already tried symlinking PidGen.dll to PIDGen.dll (filename from the logs), but that didn't help.
I have problems with flatpak version of Steam, like games with Proton unable to running at all. Have you tried running this game on default Steam?
No, but the issue that flatpak was unable to start any games with Proton should now be fixed: flathub/com.valvesoftware.Steam#152
And I can start games other than AOE3 using flatpak'ed steam, e.g. Fallout: New Vegas or Stronghold Crusader 2.
Hello @Holzhaus, we'll be using one issue report per unofficially supported game title, so I've gone ahead and transferred this to https://github.com/ValveSoftware/Proton/issues/17#issuecomment-415766461.
proton 3.7x1 2018-08mgspid.dllx1 2018-08mgspidx.dllx1 2018-08mgspidy.dllx1 2018-08pidgen.dllx1 2018-08pidgenx.dllx1 2018-08pidgeny.dllx1 2018-08
After installing and starting Age of Empires III: Complete Collection, the Product Key window pops up. After entering my key, and clicking OK, the following error message pops up:
It's not possible to progress further.
EDIT: Logfile and system info can be found here: https://gist.github.com/Holzhaus/e1a5e7ad8b59d1b5a698a18042c109a8
EDIT 2: I'm using the flatpak installation of steam.