MANACAT, I’m not sure if you’ll see this message, but I’m reaching out anyway.

I think the majority of people, including myself, have noticed issues with your addons—specifically after the updates you made to most of them on January 7th.

For this particular addon, [Support] Checkpoint Heal it doesn’t allow SI (Special Infected) to spawn—or at least that’s what I’ve observed.

To make sure it’s a case you can clearly understand, I deleted my other addons, reinstalled the game, and only used the following addons from you:

Tactical Training (improve AI + etc)
[Hard-Mode] Improved Tank AI
[Hard-Mode] Tank Spawn 100%
[Hard-Mode] Improved Acid Spread
[Hard-Mode] Improved Hunter AI
[Support] Random Infected HP
[Improved] Extended Item Carrier Infected
[Hard-Mode] Improved Witch AI

Even then, the addon still prevents SI (Special Infected) from spawning.

P.S.:
-The addon "[Improved] Extended Item Carrier Infected" doesn’t work at all.
-For the addons:
[Hard-Mode] Improved Tank AI, Improved Witch AI, and Improved Hunter AI, the command confirmations don’t show up in the chat. I’m pointing this out because in Tactical Training (improve AI + etc), the confirmation for what you modify does appear.