Certain graphics in tileset do not appear

[yopugiscool]

Hello, I am trying to import a tileset [Mack's tileset], and when i submit the tiles in section a4, the border tiles do not appear. I've restarted the maker, deleted and reuploaded the graphics, yet nothing seems to work to make the border images appear. Here are some screenshots:





I would use the smaller version of the image to outline, but this also develops a problem.





Does anyone know how to fix this issue? Thank you ahead of time! 
 

 

[Shaz]

mmm ... which border tiles?  I don't see a problem - they look like they're all there to me.

 

[yopugiscool]

Hello, thank you for your reply. It is this one:

The graphics circled in black do not appear, but it seems that the smaller version of the missing graphics, circled in red, appear.

I feel like I'm just making a silly mistake or error somewhere. 


Thanks again for the reply.