It does not valid, i had already reload or restart my forum, and when i access "*/uploads/system/gravatar-default.png" i could see the image what i upload, but it didn't apply to a new user.
@baris Guess that should have been the obvious, and yeah, we had some code that would auto generate a background for users. Disabling that did fix it. I really appreciate the help, feel kind of stupid now lol. Besides that being fixed now we still have an ongoing issue with plugins not working like emoji's, shoutbox, and so on. And words of advice on that?