Tekkit server- quarry, filler and other machines that alter landscapes not working

[bluefox100]

Title: Tekkit server- quarry, filler and other machines that alter landscapes not working

Version: 3.1.2

OS: Windows 7

Java Version: version 7 update 9

Description of Problem:

when i place a quarry or filler with landmarks and power it nothing happens.

i have searched around and found lots of people saying that opping [buildcraft] would solve it.

i opped buildcraft and it still does not work.

Help

Error Messages:

Error Log:

[Jeffrey007]

I have got the same problem i opped also [industrialCraft] and others and it still doesn't work!?!? :S

[bluefox100]

i found the solution, it was because i was using griefprevention on my land. to fix it just type /trust [buildcraft] and it will work