Bukkit

What steps will reproduce the problem?
1. Start a 1.7.10 Cauldron server with the Engineer's Toolbox mod. (http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1286850-engineers-toolbox-now-with-programmable-sockets)
2. Wire up a socket with a timer module to a socket with a burner module (essentially to create a burner that fires on and off in a loop).
3. Look at console.

What is the expected output? What do you see instead?
I expected no errors. I got errors.

What version of the product are you using?
CreeperHeal version 6.7.6.

Do you have an error log of what happened?
http://pastebin.com/4xrC4355

Please provide any additional information below.
I'm not really asking for any sort of mod compatibility (at least, I hope not, as that's out of the scope of this plugin), but I find the console spam very bothersome and couldn't figure out a way to eliminate it on my end. The errors are otherwise harmless, but I was wondering if it could be reduced, and also what this error means. (Engineer's Toolbox involves blocks that utilise redstone, and in this specific case, also involved blocks that spawn fire blocks.)