I can't figure out why none of my plugins can load scripts. I tried three different plugins. This is actually the theme of a client and I just taking over.

Do any of you have any idea what could be causing this. I am doing a malware search, and I've already searched this and tried the wp_config (define('CONCATENATE_SCRIPTS', false); thing. I appreciate your help. Thanks!
What could it be that is causing all plugin scripts not to load?