Thats a bug i saw how some lambdas appered.But with different Skins and names.I Dont know how does that happen.but i guues it can be not a bug.something else or just a Special code like inviting friends.

This just happened to me, did you find the solution?

Noitce this was realeased in july of 10.so iam not sure he got the solution.its best to use neither a Diffrent version of lambda players (Not Zetas) or downloading a lua fixer mod

I might have found a solution idk if it works for everybody but for me it worked. Also i'm not sure if the bug would reoccur again in the future or not as I've changed the map and enabled/disabled MWS multiple times, also might want to copy and save presets somewhere on your PC.

Step 1(optional not sure): I put everything to the default values for the Lambda players settings such as drop weapons on death etc etc. Idk if this is required but for me it was a precaution so you can do it just to be safe.

Step 2: Next go to this location(might be different for a few) SteamLibrary\steamapps\common\GarrysMod\garrysmod\data and find the "Lambda Players" folder and then delete it, also for me i still had the Lambda Player addon enabled but maybe you can unsubscribe and just delete the folder and then resubscribe.

Step 3: After all that you would want to go to your steam library right click and go to properties and go to the installed files tab and verify the cache and after that you're all set.

You can also change the values of the settings to the past configs you had before setting it to default values, i've had no issues thus far. Also if you tried this please tell me if it worked i would appreciate it, cheers.