Resolved Unable to move character through doors

I am creating a game based on Earthbound, and I am unable to move the current player character through a door.

Several years ago, I had attempted to re-create part of Earthbound, and my brother created a script to apply to doors. They work properly there, but in the current build of my real project, they do not work even when I attach door.cs to a staircase entrance.

Here are a couple of screenshots of the two rooms I am trying to move my character between:



And also attached is the C# script that I applied to both ends of the staircase.

 

Resolved.