Tools don't work on world

I don’t know if this has been posted before, but no tools at all work on anything that belongs to the map, be it floors, walls, or ceilings. Right clicking shoots the world, but it really does nothing. I can’t put ropes or muscles or thrusters down on the world, and it makes building more difficult. Any help would be appreciated.

Edited: Apparently disabling all addons will make it work again, but I’m sure none of us are going to have that.

Same here.

Nobody?

Which addons?

[editline]27th December 2012[/editline]

Quick test on one of my servers, however it worked fine.

http://bybservers.co.uk/sharex/2012-12-27_18-23-12.jpg

I’ve a fair few addons installed, so I’d assume it’s something you have doing it.

Through much trial and error, I figured it out; it was Henry’s Animation Tool that did it. Though, I have no idea as to why it would.