I had the same problem, and just found the answer. WordPress changed from using “title” to using “src” in the image URL, and this caused the get_post_image to stop working.
In functions.php in the mimbo theme, look for this block of code.
if(!$matches) {
preg_match(“/<img class\=\”.*\” title\=\”.*\” src\=(‘|\”)(.*)(‘|\”) .*( |)\/>/U”, $the_content, $matches);
}
Just after that block of code, add this, to check for the new way as well.
if(!$matches) {
preg_match(“/<img class\=\”.*\” src\=(‘|\”)(.*)(‘|\”) .*( |)\/>/U”, $the_content, $matches);
}
Hope this helps.