"InvalidParameterException All files must have an owner!"

Greetings All ~

I went to log in this morning to find this error message on the main page. I can view profiles via direct link, etc. but on the main page where there are the "Latest Members, Latest Blogs" etc. this error is displayed and the rest of the page is blank:


All files must have an owner!


Any ideas or possible known fiXes I may have overlooked? Any and all help is most appreciated!

Thank you in advance,
Dr. W