Yorman on "[Plugin: Sucuri Security - Auditing, Malware Scanner and Security Hardening] Malware scan doesn't work at all"

Try this, disable every file system scanner, actually the only scanner that runs in the malware scan page is the one that searches for modified files, but lets disable all of them to see what happen. Also enable the development mode (for a few seconds) to see what may be causing the plugin to fail. Let me know what you find.