Mysterious line at edge of png file only at certain zoom levels

[christopherb291242]

Hi, 

I'm kinda going crazy here. I have an issue where I created some images that are modular and can be put together in a different software application. I assemble them in Adobe Illustrator to test them and depending on the zoom level I get this edge that changes in size or disappears entirely. In the software they use to display the PNGs the edge is there, but it is stagnant and much smaller. I'd like to get rid of the lines entirely though. Is there a way to fix this? I've attached all the images as well as embedded a .gif demonstration of the behavior I'm describing. 

The zoom at which the lines disappear in Illustrator is 150% in the example .gif

 

Thank you, 

Chris

[Trevor.Dennis]

Chris, I am sure you realise that 100% zoom ratio is the only reliable way to view an image in Photoshop?  If you don't see any artefacts at 100% 1:1 zoom ratio, then they don't exist.

[christopherb291242]

Hey sorry Trevor, thank you for the reply but perhaps I didn't explain it well. The issue occurs when I bring the 3 attached PNG files into Illustrator and piece them together. The seams appear at multiple zoom levels and only disappear at the 150% zoom level. 

[PECourtejoie]

Then It might be an illustrator issue?