This plugin has problems on WordPress installs using multisite with subfolders. Timthumb won't be able to load the images on the subsites, because the URL will look like this:
But there is no real
/subfolder/ directory on the server (the path will be rewritten by WordPress), but Timthumb doesn't know that, so it can't find the image.
My solution was to modify the
foreach loop in
BJLL::_filter_images() like this.