When I upgraded an existing website to 1.4.1, the website header loaded and the loop.php error appeared. I copied over the old loop.php and it worked. However, the header didn’t line up with the black bar on top and below it — it was shorter.
Yet, it worked fine on a different site. I can’t figure it out because they’re a copy of each other. Anyone see this problem? Doesn’t look like anyone has reported it.