Source: Steampowered
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Updates to Garry's Mod have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:
Garry's Mod
-Sliders are less spazzy when attached directly to the world
-Fixed Addons/Gamemodes not getting mounted on Dedicated Servers
-Fixed looping thruster sounds
-Fixed crash when lua_openscript'ing a file without an extension
-Fixed duplicate 'name changed' notification
-Fixed some people not being able to spawn certain props
-Fixed airboat fire effects not showing in Multiplayer
-Fixed SWEP menu showing 'admin only' for all weapons
-Fixed teams not being labelled properly on the scoreboard
-Fixed ghost props not hiding when quick switching from tool gun in Multiplayer