When attaching photos, if the file size of the photo is to large you will encounter that error. On the home page there is a forum named QBHelp at the bottom. One of the post near the top describes how to resize the photo. Most digital cameras today, even cell phone take large megapixel photos increasing the file. And this file size in most cases is over kill to view on the computer. The larger the megapixel the better a print would be. Anyways, that a brief description why people are having a problem posting pictures with the new board.
Click the link below to learn how to resize with windows.
http://www.quiltingboard.com/qb-help...g-t166655.html
On a Mac, there should be an option in iPhoto when you export a photo to adjust the size and medium should make the file small enough. Right click on the photo after your exported and check info, it will state the file size.
I'm going from memory with the Mac instructions as I'm lying in bed playing on my iPad. If you have any questions, I would be more than happy to answer and verify tomorrow, PM me.