I have just uploaded a modified version and everything works fine now. I also add this change to future versions.
I too have this problem on only one of my 40+ Joomla imstallations after the latest upgrade of Securitycheck Pro.
Tried to download the latest version from the downloadpage and reinstalling this again, but problem is still there.
Where can I find this amended version?
This seem to me to be a conflict with the extension called "Advanced Module Manager" from Regular Labs.
If I uninstall that extension, then SecurityCheckPro work again. After reinstall of AMM, then problem reappear.