I'm trying to download some preview images for comping and approval by the client before purchase. I have tried two ways, download to desktop and through the library. They appear fine in the icons in the library, but as soon as I drag them into the document they are just a black square with the Adobe logo across the middle, which is of course completely useless. Am I missing something obvious? Never had this happen before on any other stock sites (or on Adobe Stock for that matter), but I'm kind of still stuck with Adobe Stock at the moment after being kidnapped and taken hostage from Dollar Photo Club.
What image numbers are you having issues with.
Just by what you describe I am thinking you are trying to drag an Adobe Illustrator file (.ai) into your document. If it is an Illustrator file you will need to convert it in Illustrator before you can use it in other apps.