Could you explain where you're seeing the error for SCLogin? Is this on installation or upgrade to SCLogin v7.0.1? I don't see an error on upgrade on an old Joomla 2.5 test site.
Or is the error when you open the SCLogin module? If so, have you attempted to save the values in the module - does the error still appear? If you downgrade your Error Reporting level to Maximum or lower, are you still seeing the issue? Does the functionality of the SCLogin module still work as expected with the error?
Honestly, if this is just warnings with SCLogin on Joomla 2.5, I wouldn't worry. We test extensively with Joomla 3.5+ and don't perform our testing on 2.5 anymore.
-Melissa
Joomla Extension Manager Warning
