I have tried, unsuccessfully, to post a jpg picture on the GGMG group community.
I reduced the resolution of the picture to 300 kb, and then 200 kb (450 x 800) and it didn't make a difference.
Here are the screens and steps I took:
1. Go to GGMG, click on "+ Add photos" ...took me to the File upload mgr.
2. Clicked on Add Files. Chose file from my computer. Clicked on upload. Picture now shows in the bottom section under "attachments"
3. Click "Done" ...this brought me to a new screen showing my new picture in the "pending" box at the top of the page. Other older photos (from others) are seen below.
4. There is only one clickable box on the pending photo page and it is labeled "save changes". I clicked on it
5. I was taken to a blank (white) page. The URL is www.sawmillcreek.org/group/php . At this point, I can leave and come back in an hour and I still have the white page.

I did this with two different computers (both running Windows 7). I am using Google Chrome for my Browser.

?