I have some 3 or 4 blocks in my huge map that are passable without having that option selected or any action that doest it..

The action that makes the player walk in the walk template from A5.

What am i doing wrong?

I'm getting errors like SURFACES TOO BIG or VERTEX OUT OF PLANE, but in different blocks than the passable ones.

Is there anyway to correct this errors like Valve Hammer does? Do they have anything to do with the passable blocks?