https://youtu.be/UIdlFnzRo0I - Video of what happens.

Hello. I tried to make a doorway that connects a house inside and outside in NWN EE toolset.

However, error occurs when I do that. How do I fix this?

I've tried several times but it's all same. I even tried connect the door not both ways, but only one way

or I tried very tiny map, and I didn't run any other program beside NWN toolset but error occurs and it turns off.

Anyone knows solution?

Thank you.

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Solved: I just had to add tags, not using 'Setup Area Transition'