in reply to Re^4: Module not included but present in %INC!
in thread Module not included but present in %INC!

You presumably have the package Dante::Correlation::CorrelationEngine declaration after the use Date::Parse statement — in which case the functions (like str2time) will be exported into main::, not Dante::Correlation::CorrelationEngine.

When I put the package statement in the appropriate place, and add a constructor, the code works fine for me.