Why me? It happens again in version 4. Here are some pictures:

BEFORE:

http://dl.dropbox.com/u/43717161/2011-12-28_12.57.46.png

AFTER USE:

http://dl.dropbox.com/u/43717161/2011-12-28_12.57.56.png

Plz help! I guess I have to use bLift temporarily! :-0

The lift checks for any connecting iron blocks to define your lift, up to 16 blocks. Because your whole floor is iron the plugin is trying to make the whole room one giant lift. Just replace the surrounding blocks with some other block time.