Didn't see it while in recent posts summary. Went to this thread: same result. Thought it could be an attachment, so logged in to check that out and still didn't see anything. Then gave up without posting about it.
Something similar happened to me just recently while I tried to post an image in the Laura's Birthday thread. In that case it was caused by some form of protection against copy/pasting located on the website of origin. Couldn't get it to work properly after several tries, so I had to search for another one elsewhere which wasn't equally beautiful but had to suffice in the spur of the moment.
There are numerous other glitches possible, of course. Hope you can work it out somehow. :)