Error i get after the intro of the game

[ORBlT]

so when i try to play test my game in rpg maker xp it goes through the intro just fine but when the intro is over this error pops up.
i have no idea why it does this and have no idea how to fix it either. i just got rpg maker xp a week ago and i am a noob at it, so sorry if the solution is obvious. also i just joined pokecommunity so i dont really know how it works either, so if im doing something wrong sorry too.

 

[Seth Pegasus]

Sorry, I can't read the small thumbnail you uploaded.

 

[ORBlT]

right click that that little icon thingy and click open image in new tab to see it

 

[Seth Pegasus]

I see you're online. Can you just copy and paste the info? I really can't seem to get the image to work.
Edit: All I get in the small thumbnail. Please upload the image again and put it in the spoiler tags. That will show the big image.

 

[ORBlT]

the attachment is better now. Also I found out that the problem is something with the insides of my buildings. I have some other tiles than the original ones and now I'm wondering if that's the issue somehow

 

[Seth Pegasus]

Based on the error message, I think you may be right. Of course my knowledge is somewhat limited.

 

[KurisuSan]

Did you delete a map and not change the initialization location for the new map?

 

[ORBlT]

nope

Edit:
I figured out what it was, it was because of an event that gives you an item, and it just didnt like it or something.