QuiltE,
How are you trying to load the pics? Phone, tablet, PC? What program(s) are you using? What is the error message when you try to load the pic?
We may be able to help with the process with additional information.
Wonder what changed in the process between cameras? A setting perhaps? You may check your manual and the settings. Seem there is something about the photo size of the original photo in settings on cameras. It's been a while since I've used a camera since phones are so easy.
With my phone, I send it to me as an email and it usually posts. Hope that helps!