Yeah...

That's an Oxide message which means you don't have the plugin installed.

That's the problem, I do have. All the other permissions are working but this one is not.

Merged post

I also found this in my logs
 Duplicate permission registered 'noescape.raid.upgradeblock' (by plugin 'NoEscape')
Duplicate permission registered 'noescape.combat.upgradeblock' (by plugin 'NoEscape')
Duplicate permission registered 'noescape.raid.upgradeblock' (by plugin 'NoEscape')
Duplicate permission registered 'noescape.combat.upgradeblock' (by plugin 'NoEscape')

Do you have two copies of NoEscape.cs in your oxide/plugins folder?

No, only one.

Please take a look at the lower part of your config file. Look for Settings -> Block -> Types.
Is it possible that you have upgrade double in there and build is missing?

  "Settings": {
    "Block": {
      "Types": [
        "remove",
        "shop",
        "tp"
      ]
    },
    "cacheMinutes": 1.0
  },
  "VERSION": "2.1.2"
}​

I actually had upgrade there twice, but that only fixed the console errors. I'm still getting the error 'noescape.raid.buildblock' doesn't exist

I'm having the same issue yet I don't have two doubles in the config and trade installed..

(23:47:21) | Unloaded plugin Trade v1.2.4 by Calytic
(23:47:21) | Loaded plugin Trade v1.2.4 by Calytic
(23:47:26) | Permission 'noescape.combat.tradeblock' doesn't exist​

Having Trade or some other plugin installed will not effect whether or not you can assign permissions with NoEscape.  Permissions are available automatically when NoEscape is installed.  There isn't anything special you need to do to assign them.  I would suggest deleting your configuration and regenerating it.