A lot of people are reporting that they can't play any addon maps from the L4D2 Steam Workshop on their mac.

The issue is basically this: VPKs appear in the addons list after they have subscribed, however they can't play any addon maps and when they try to create a lobby for a map it doesn't appear in the list like this:

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=148360938

Here's one thread with some people reporting it: https://steamhost.cn/steamcommunity_com/workshop/filedetails/discussion/121068229/828934424201040179/
This system is reported not to work:
OS X Mountain Lion 10.8.2
Macbook pro (2010 mid) MC372LL/A 3 MB cache 2.53 i5 (2 cores) 8gb ram, NVIDIA GeForce GT 330M and Intel HD Graphics (256mb)

@ ZeqMacaw

Most players don't know about the console nor any of these commands.

Other than the issues reported with the voice chat here: https://steamhost.cn/steamcommunity_com/groups/L4D2WSVB/discussions/0/846946775311116238/ there's also a voice chat issue in the lobby, voice chat doesn't work at all in the lobby (the mic icon appears but you can't hear anyone). If it's not going to be fixed I suggest you delete it from the lobby because some people are talking to themselves in the lobby without knowing.

You can only mute people in the lobby but there's no easy way to mute people in-game, what about a votemute (like votekick but instead it's votemute). It would also be great if you were forced to press "Yes" or "No" after you've selected a player's name (to votekick that person) because sometimes you choose the wrong name in the list (it's easy to missclick).

It's currently much better to write changelogs in the "Discussions" section of an item in the Steam Workshop. I finally added all my changelogs to my Steam Workshop item but in the "Discussions" section: https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/discussions/121068229
There is a limit in the "Discussions" section aswell, but you can just create more comments which solves the problem. You can also just make the thread "pinned" and lock it to make it more reliable, more professional.

I take my map as an example:

The vpk on all third party websites is named: helms_dr18
and the vpk from the Steam Workshop is named: 121068229

The only difference between these 2 vpk files is the name of the vpk, the content in them is exactly the same. The one from the Steam Workshop was basically copied, renamed to helms_dr18 and then uploaded to third party websites.

To fix the consistency error(?): The name of the vpk file on all third party websites needs to be renamed back to 121068229. But then as you say the directory name needs to be the same - but can't people that download the vpk from third party websites install the vpk by placing it in the workshop subfolder instead of the addons folder? Wouldn't that do the trick?

It seems if you download a map (VPK) from a third party website and then decide to play on a server that downloaded the exact same map but from the L4D2 Steam Workshop (or vice versa) then it won't work.

Why not delete the workshop subfolder and make it so all items from the L4D2 Steam workshop are added into the addons folder instead, wouldn't this solve all issues?

@ 119 - LuKeM
The reason why I want to grab a player's Steam ID is because I want to create an XP system and then reward players that spend a lot of time playing a specific map. You can read my idea in my second comment in this discussion: https://steamhost.cn/steamcommunity_com/groups/L4D2WSVB/discussions/0/846945579837673348/

GetPlayerUserId() is great. I would really like to see unique id (steam id) also, but I guess it's not that easy.

More general bugs:

1. If you kill a tank when he is climbing an edge (when he grabs an edge and pulls himself up) then he will first finish his "edge climbing animation" before he drops dead.

2. While another player heals me with a medkit and I decide to go idle (press esc and then click "take a break") then the healing will auto cancel and the other player has to start all over again to heal me with the medkit.

3. Smoker tongue sometimes doesn't deal any damage. In campaign and survival mode the smoker tongue doesn't deal damage until the smoker has pulled the survivor near him or if something is blocking the survivor from being pulled to the smoker.
This means if a smoker is standing on top of a slope and a survivor at the bottom of the slope then the smoker will not be able to pull up the survivior which means that the tongue will not deal any damage at all, the smoker will eventually release the survivor and the survivor can just walk away unharmed. You could improve the smoker tongue by letting it deal damage based on how long (time) it holds a survivor only, and not deal damage based on where the survivor's position is currently at.

A couple of more general bugs/issues:

1. If you kill a witch with a shotgun then 1000+ dmg will be displayed when all players are inside the saferoom at the end of a map in a campaign (when the next map is loading, HUD). However if you throw a molotov and set a witch on fire and let her die from fire only it will say that you only did 70+ dmg when the stats are displayed.

2. When playing as a survivor: When you hold down crouch button (default ctrl) a small white picture of a human appears in the bottom right corner of the screen, however if you are automatically crouching (for instance when you are inside a narrow tunnel, ventilation etc. and you are not holding down ctrl) then the picture doesn't appear eventhough your character is currently crouching.

3. Sound bug with melee weapons: When you successfully hit a zombie with a melee weapon (default left click attack) then a "hit"-sound will play, however, sometimes the "hit"-sound plays after you swing your melee against a zombie but the zombie doesn't take any damage at all.

4. Let's say I am playing as Coach, then I see Francis standing next to me using a rifle (weapon_rifle_spawn entity), however the clip in Francis' rifle will be invisible when Francis is shooting (other characters don't have this specific issue, only Francis).

5. When you give pills to a bot that is currently shooting, when the bot receives the pills he still thinks he is holding his gun and will attack (left click) but with the pills. This means if you give a bot that has 98 hp and he is shooting then he will use the pills when he receives the pills and waste the pills (overheal). This is not just a bot issue since many players also accidentally use pills when they receive the item from other players while they are currently shooting etc.

6. Some sounds become corrupted during the effect of the adrenaline item. Why not delete the sound change caused by adrenaline and then add a bar that ticks down instead (that displays how long the adrenaline effect lasts/remains).

7. When you pick up an m60 and drop a different item where the m60 spawned then that item will float above the ground (m60 collision remains where it spawned after you pick it up). This invisible collision can also block grenade launcher projectiles.

8. You start in a saferoom, you exit the saferoom, then you encounter a tank in the middle of the map and then decide to run back, when you return to the saferoom and close the door and stand a few feet away from the door then the tank won't destroy the saferoom door. If you stand far away from the saferoom door then the door will be deleted when the tank is about to enter the saferoom. In Death Toll campaign you solved this by not being able to close the saferoom door once it was opened, however in some other campaigns you can still glitch with the door.

9. If you kill a tank when he is not touching ground (for instance if he jumps and you kill him midair) then he will ignore gravity until his "death animation" has finished playing.