aStonedPenguin Posted January 10, 2020 Share Posted January 10, 2020 The latest version of macOS no longer supports 32 bit applications such as Garry's Mod. If you don't have the latest version of macOS you may consider doing this anyway simply because it's (seemingly) more stable. If it's not reverting is self explanatory. In order to play you'll need to do the following: In your steam library right click Garry's Mod and select "properties" while the game is closed. Select the "betas" tab then select the 64 bit option shown below. 1 2 2 3 1 2 Link to comment Share on other sites More sharing options...
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