Game crashes sometimes when saving. Other times not. Is there some reason you can't put the world save in a try catch? I assume this COULD be that my backup software is backing up the save file at
the time you're trying to write to it possibly causing conflict, but that seems unlikely since I don't think it locks the file and I don't have this problem with ANY OTHER GAME EVER. This is quickly

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Native Crash Reporting
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Got a SIGABRT while executing native code. This usually indicates
a fatal error in the mono runtime or one of the
"/home/wolfik/.local/share/Steam/ubuntu12_32/reaper SteamLaunch AppId=105600 -- '/mnt/usb-Seagate_Expansion_NAADAR28-0:0-part2/SteamLibrary/steamapps/common/Terraria/Terraria'", ProcID 242025, IP 0.0.0.0:0
ERROR: ld.so: object

Terraria crashes on launch on macOS 10.12.5 - fresh download.

I launched Terraria from the terminal to check it out:

cd ~/Library/Application
\ Support/steam/steamapps/common/Terraria/Terraria.app/Contents/MacOS
./Terraria.bin.osx

OpenAL not found! Need FNA.dll.config?
[[searchmatch]ERROR[/searchmatch]] FATAL UNHANDLED EXCEPTION: System.DllNotFoundException: libopenal.1.dylib
at Microsoft.Xna.Framework.SDL2