Quote: "firstly are you using doors from the 'entity' tab or 'segment' tab... If it's from the 'entity' tab they will never open...I believe they are just for show... "
There seems to be some confusion about door segments, door frames, and door entities. A door segment consists of a door frame and a door entity. It is the frame that cuts the hole through wall segments when you place a door, and the door entity that opens and closes.
If you place a door segment and remove the door entity (by selecting entities from the library and then highlighting the door entity and left clicking) you will have a framed opening.
If you place a door entity, you will have a working door without a frame and no opening in the wall (which as I stated earlier is cut through the wall by the frame).
Both segment and entity have a purpose, and no operational door will work properly without both.
The entity can however be placed and used as a static object if you so desire.
The forum provides a means to hide our true identity. Too bad we always screw up and let it be seen.