Re: Adding wallpapers to system settings backgorund
Presuming that your Pictures directory in in your home directory, I suspect that you do not have the correct permissions set on your Pictures directory. You, as owner, should have full access to this directory and its enclosed directories and files. You might try, in Nautilus, right clicking on your Pictures directory, selecting properties and the permissions tab then adjusting the permissions for owner, selecting the option to apply permissions to enclosed files. If that doesn't work, it might require a selinux relabel, if you are using selinux in enforcing mode.