Cannot modify headers error updating users
Permalink$res2 = imageJPEG($image, $newPath, Loader::helper('image')->defaultJpegCompression());
and line 957 in the concrete > core > libraries > view.php
header("Content-Type: text/html; charset=" . APP_CHARSET);
This site has been moved between several servers throughout its development. That may have something to do with it.
I've emptied the cache.