White outline around all imported images?

I tried importing multiple PSD files of a cut up character, (legs, hips, arms, etc)
But I keep having the issue of there being a thin white line around each and every one of them. when there is a joint, the solid colors are cut down the middle with a white line.

I’ve tried saving my art in many ways to get it to stop doing this. Is there anything I can do?

Well first of all you should render the picture and see if it is still there then.
You might have imported the picture with “Premultiplied with White” in the transparency options of the import window selected. You need to set that to “straight” (if it asks about merging layers for PSDs you have to select “straight” there too).