When I //regen, a battle tower spawns, why?

[Jasai]

When ever I try to clean someone's mess and //regen a selection, 3/4th's of a battle tower spawns on the edge of the selection. It's just a hassle trying to delete the whole battle tower and then fixing the ground it was on. In the console all it says is that the battle tower spawns at the coordinates the selection was at, and underground: false. Nothing else. 

 

Also, a battle tower was never previously there.

Everytime I do //regen, it always spawns out of no where, lol.

 

I'm using

 - latest version of hexxit

 - mcpc plus 1.5.2 R1.1 forge

 - WorldEdit 5.5.7

Edited December 15, 2014 by Jasai