I have already implemented a work-around.
But my post was to inform on a possible mistake/error either in the API or the back end of the server housing the images.
If I can’t trust that the server is returning the type of file it reports in the return header then in cases where it returns a file type I don’t anticipate would lead to unresolved errors in my app.
Since I posted this thread I found another url for a different image returning a PSD file when the server is reporting it as a PNG. The images returned in the API appear to be adding more from time to time , it just added a whole new set recently.
I realize this is a small issue but it appears to be a legitimate error.
All I am saying is it would be nice if I could trust the process.