SHORT: You have too many addons.

LONG: This kind of crash is due to a problem with Garry's Mod itself, and will happen when there are too many scripts loaded into the game. In order for the TF2 bots to retain their complexity, they require a whopping 600 .lua files. The number of scripts your game can handle depends on your computer, and unfortunately there's no reliable fix for this issue.


SHORT: One of your addons is conflicting.

LONG: This is usually caused by other addons with messy hooks (such as dismemberment and gore mods), or by addons thinking that TF2 Bots are NPCs, which they are, in fact, not. I can't really go through evey single addon on the workshop to weed out all the little conflictions with the TF2 Bots, so unfortunately there's no reliable fix for this issue aside from removing the conflicting addons.


If you're getting errors, see "I'm getting errors" instead.
SHORT: Bots can't walk there. Put them somewhere else.

LONG: The TF2 Bots are programmed to navigate on maps without navmeshes, so the only way that they'll get confused is if they're trying to rely on a nav mesh that isn't there. So if a map has a nav mesh, but the spot the bot is standing in doesn't have any nodes, he won't know what to do. Many noded maps won't have nodes in places players aren't expected to walk.


SHORT: He needs metal before he can build.

LONG: Sentries, dispensers, weapons dropped by other bots, and robot gibs can all be collected by engineers and used as metal. When metal is nearby, the engineer will collect it. Several pieces must be collected before something can be built.



SHORT: No, I don't want to.

LONG: It's already been done, plus I personally don't care too much for TF2's halloween mode, so re-programming them isn't very appealing to me.




SHORT: Make sure TF2 is installed and updated.

LONG: Valve screwed around with model names at one point, so you might get model errors if you've got an old version of the game. Or if it's not even installed.






I'll be adding more to this list soon.