09 May 13 3:14 am
I'm having the same problem.... I'm using a built-in affilo theme.
I did get this message (no, I don't remember how I got this message, but I think it was a preview option)
Catchable fatal error: Object of class WP_Error could not be converted to string in /home/content/66/9146866/html/strongabs/wp-content/themes/affilotheme_2/includes/functions/hooks.php on line 204
There is no message on the main page... if I look in the html, I see there is no header.jpg or .png mentioned anywhere, meaning it may be the insert function that is failing. I've tried the "Header Image Repeat" option, they don't make a difference. I've also tried other images, include just a black one with the text (no image) and still no luck.