So i just updated to OpenBlocks 1.2.4 on my DW20 pack and i can't use the elevators in survival but strangely enough it works in creative.
I tried breaking and replacing but to no avail.

Video footage of the problem: http://youtu.be/a780JStGgbA

-Toby

They require XP, :)

@TobyOrachee FYI you can disable the draining of XP in the config.