I never mentioned Bradley Guards on Umod. I said Guarded Crates (you called it Crate Guards). But, fine. I understand. NpcSpawn is a plugin from Codefling for a lot of their plugins. I downloaded to use for Zombie Horde. I have Guarded Crates, I have Bradley Guards and I have NPC Spawn 2.6.0 and everything runs fine.
I see a couple of years ago, you had an issue with BotReSpawn and Guarded Crates, from advice that Bazz31 gave you. So, we are talking about Guarded Crate from UMod.org.
It is empty, but I do see it down in the description. My bad, that I didn't see this yesterday. So, yes ... at the time, they wrote that about this in September, he wrote down the current version. But, you should always be depending on the latest version and update them as they change. You can use 2.6.0 and it should work. If it's not working, are you getting code in your RCON you can copy and paste?