Does anyone else think sometimes the Creation Kit just wants you to never finish?

I had my brother test my mod out to find bugs. Here's a list of things that shouldn't of happened because they work fine for me.

1. There are 3 Debug Messageboxes that trigger with a defaultActiveSelfTRIG that work fine on my computer and don't trigger at all on the other.

2. One room had a surprise Sabre Cat maul my brother to death as soon as it loaded. Nowhere in that room exists a Sabre Cat on the editor nor when I test it on my comp.

3. Where I have a bottomless pit with a defaultActiveSelfTRIG in it to auto-kill the player if they fall in works fine on my comp. On the second comp it doesnt trigger at all.

4. Some switches arn't affecting some NorPortcullis gates on the second comp but are working as they should on mine.

5. I have a torture room with some buttons that spawn NPC's for you to kill them in various ways that work fine on my comp. On the second comp they don't spawn any NPC's.

Would anyone know what gives with any of this stuff?

The best way to test is to start with a fresh VANILLA save with NO mods running. I saved mine inside the cave after escaping Helgen Keep. Every time I implement something new, I always test it from that save. That might help narrow some things down if you're not already doing this. You both may be experiencing stuff bugging out because of what's in your saves. This is the only way to be sure that I'm aware of.