I had the same problem. Here's what I did: Copy and paste your photo into a word doc. Then re-copy and paste from that word doc to the email. It worked for me, so maybe it will for you too!
I searched (and searched and searched) and did find a gmail work-around. Here it is:Whether you get tired of writing "see attachment" or you just want your messages to look prettier, you can insert inline images to your messages to dress them up. To get started, follow these steps:
I just attached a photo from my "Pictures" file and it was accepted. I do believe the restriction had to do with the actual story itself.
Glad this worked out -- I'm sure you can understand why we can't open attachments from hundreds of unknown computers! It's fine to send a second email with the photo pasted into the body if that's easier.
I'm using Mac mail - ALL PHOTOS ARE ATTACHMENTS - There is no way around that. Now what?