Basically the issue does not occur everytime you break a cube for the most part it works flawless however sometimes when you break a cube the server will shutdown upon reloading the server and spawning in where you broke the cube there is 2 brick blocks stacked on top of each other, I'm not sure what its trying to load or why its crashing but this is the only issue Ive noticed so far -- it should be noted I am using this mod in the Space Astronomy 2 mudpack.

Closed due to inactivity

Can you provide a crash log? (Please use Gist or Pastebin)
Also, please note your MC, Forge, and CCubes Versions.

From the current description I think I know what reward is being triggered, but I'll need the log to investigate HOW it's going wrong.

Sorry, as soon as I trigger it again I will paste the log via paste bin I will paste asap!

As long as you haven't deleted anything from your Minecraft installation the crash log should still be there, in the same folder where you find the mods and config folders look for a folder labelled crash reports. Take a quick peek at the most recent ones and try to find the one from the reward crash.