Info: Mac, Yosemite, Bridge CC
I have an extensive collection of PNG files that HAD been keyworded in Bridge (XMP). I noticed several days ago that the XMP of all those files is now missing.
When attempting to assign keywords back in, I also get the message: "The file ####.png canot store XMP metadata. No changes will occur." Weird. Like you said, it's looking like a bug.
And here's the kicker... if I duplicate the PNG file (Edit > Duplicate), the "copy" DOES contain the original XMP that went missing.
I really don't want to have to manually duplicate all my PNG files just to regain the metadata. Any brainy solution? I'm attaching an example of the original PNG (missing XMP) and the duplicated PNG (magically restored XMP).