Emiliocat and also for others, take the code from WernerK's post " RE: Build with Collision " , and replace lines 138 to 147 of the build_with_collision LUA in the config folder of the Buil with Collision 1.3 beta version by VacuumTube. Then the button is to the right of the bulldozer symbol and with the hint from Black Desire from the post "RE: Build with Collision " it should work for now. I myself have now tried it on several maps without problems
Can someone send me the files?