I have an Office 365 E3 account and a brand new Windows 10 phone (Lumia 930). Reset the phone to factory settings, reinstalled and added the O365 account. It does appear in OneDrive and I can view the contents. However, I can not enable the camera upload - the slider is greyed out in the off-position. From that screen I can go into account settings and see my O365 account.
Is there some kind of black magic required to upload my camera's pictures to the O365 Onedrive?