@Loki I use tShock... tShock just came out for 3.0.6 like RIGHT NOW. Your already updated to 0.7!!! That means we got to wait for tShock... Can you please wait until a big update in big clunks so you don't do them all individual. It's annoying. Ruins server timing.
I've opted into the beta by following the instructions, but the Install button isn't shown, and if I attempt to install Terraria using the contextual menu, then the following error message is presented:
Terrraria is not available on your current platform.
Restarting Steam had no effect.
Edit 1: Enabling and then disabling offline mode (from the Account submenu) resolved the problem. Yay!
Edit 2: When I now attempt to launch Terraria, the following error message is presented:
Failed to start game (missing executable).
I opened Terraria's installation folder and discovered that it's completely empty!
Edit 3: After opting into the beta again, I can now play! However, there is no background music whatsoever.