An update for Alien Swarm: Reactive Drop has been released. The update will be applied automatically when you restart Steam. The major changes include:

• Added Bonus Mission 7, which is the original undivided Area9800 Power Plant mission(thanks to jhheight )

• Cheat cvars and commands will no longer work in single player mode

• Grenade Launcher's grenade will now correctly collide with doors

• Player's status in Steam Friends window will now be shown correctly if player is playing on a dedicated server which has lobbies disabled

• Dedicated servers will not(by default) check for workshop updates on mission restart(this can be controlled by a cvar)

• Improved pathing in Sewer Junction. Aliens couldn't follow marines in a few places, hordes failed spawn because of this too.

Changelog

• Fix nodegraph in SewerJunction. Aliens couldn't follow marines in a few places, hordes failed spawn because of this too. Used ai_show_connect_crawl to find problematic spots. First place is on stairs after turning west. Second place is the passage that is created by exploding barrels.

• Added Bonus Mission 7(thanks to jhheight). This is the original undivided version of Area9800 Power Plant, or, in other words, Power Plant's Cooling Pump and Generator in one mission.

• Fix grenades collide with doors during open or close animation
  Grenades previously were exploding on contact with air in door frames
  when the door was opening or closing. Now grenades correctly fly through
  the door frame and only collide with the door itself. This didn't happen to rifle grenades, but to grenade launcher, vindicator,
  freeze and hand grenades.

• Add rd_grenade_launcher_explode_on_contact cvar. If set to 0 grenade will not explode on contact with rigid world. However grenades will explode on contact with aliens

• Add rd_grenade_launcher_num_clusters cvar

• Fix leader crown is not displayed during briefing when autoready is on

• Remove blood effects from Grenade Launcher grenades. Previously grenade when flying in air would emit blood because it was damaged by explosions from other grenades.

• Fix rich presence for clients who play on dedicated servers without lobby info. Previously clients who play on dedicated server that has
  sv_allow_lobby_connect_only 0 were displaying incorrect Steam rich status.

• Prevent grenades to fly into the sky in place after the biomass block on TimorStation

• Add rd_interpenetrating_entities_warning cvar.

• Add several fence models to lights.rad

• Make ChaseNearestMarine() VScript function wake alien if it is asleep
  Previously this function did nothing if alien was far from marines and
  was sleeping.

• Add rd_clearhouse_on_mission_complete cvar. If 1 all NPCs will be removed from map on round end

• Add rd_workshop_update_every_round cvar. If 1 dedicated server will check for workshop items during each mission restart(workshop.cfg will be executed). If 0, workshop items will only update once during server startup

• Prevent displaying of computer interface if asw_simple_hacking 1. Computer hacks, such as the computer at the end of Landing Bay, will
  no longer show a UI for hacking if asw_simple_hacking is set to 1. By element109.

• Suppress weapon stats missing message. When setting "rd_weapons_show_hidden 1” messages display in
  console just changed to DevMsg. By element109.

• Add new VScript functions

• Fix horde positions are blocked by player clip brushes