Lua error when initial spawning in a theater

[cannon]

When a player joins a server and spawns in a theater, the following error is shown:

[ERROR] addons/cinema/gamemodes/cinema/gamemode/modules/theater/cl_init.lua:390: attempt to call method 'GetTheater' (a nil value)
  1. LoadVideo - addons/cinema/gamemodes/cinema/gamemode/modules/theater/cl_init.lua:390
   2. func - addons/cinema/gamemodes/cinema/gamemode/modules/theater/cl_init.lua:268
    3. unknown - lua/includes/extensions/net.lua:32

The theater works if they walk out and back in.