Quarry bugging around on Nitrado Server

[WrathOfDarkn3ss]

Me and my friends are having a Nitrado Server, with 6144MB RAM, and we have just finished building a quarry... as we tried to put it up and transfer EU into RF, which we have done successfully, the quarry keeps on bugging around... first of all, as u can see in the pictures... the quarry is literally only digging random holes which is completely strange...

2. it's throwing out cobblestone (no real items) in form of a laser which is randomly flying around ...

 

anyone know's why and how i can fix this? 

 

(cant upload the other picture cuz they are too big :/)