Problem solved! Thanks to pseaton for his help!
The people who fix these things will need more information - what browser you are using, what operating system, and what versions at least.
Have you got an ad-blocker or similar running?
Are there any messages, pop-ups, or does it sit a "spin" for a long time? Or does nothing happen?
You can hit the Edit button, and add all that to the opening post.
It would help to see a screencap of the small "X" you've mentioned.... it sounds like the file may be uploading, but then won't display for some reason? If so, my hunch would be there's a problem with the file type, data, or size.
Are you able to upload the same images through instructables.com/upload? If so, you can probably access them through the "Image Library" in the editor. If not, you may get a more meaningful error message to share with us.
Have you tried using the "browse" button next to "upload" instead of using the drag and drop?
How about Firefox or Internet Explorer?
You may also want to try an "incognito" window in chrome. From a normal chrome tab on windows, Control + Shift + N opens a new Incognito window. You'll have to login again. If this works, you may want to clear your cache and cookies in Chrome.
I do also see anecdotal evidence of Chrome getting into a state where it won't allow any uploads at all, to anywhere. Eg, in gmail or this reddit user. in gmail (https://support.google.com/mail/troubleshooter/276...) or this yahoo (https://answers.yahoo.com/question/index?qid=20131...). Have you tried uploading photos to any other websites from inside Chrome?
Thank you so much (!!!) for your time and help to solve this problem! It is really appreciated!
Glad we could get this all sorted out. Thanks for your patience!
i have been unable to reproduce this issue in chrome browser.
can you attach a screenshot of the error you are experiencing? also can you reproduce the issue in an incognito window of the same browser?