Engine Initialization Failure after last update.

using XP, after the last update get Engine Initialization Failure.
tried uninstalling and reinstalling and still have the same problem.
I can see the little green gui that says secure in the upper corner and change its options, enable/disable etc the fw, av, hips, and viruscope options, but when trying to access the settings pages ‘Engine Initialization Failure’ comes up.
Any ideas?

Please try reinstalling CIS following Most Effective Way to Reinstall CIS to Avoid/Fix Problems by my colleague Chiron. It will provide a reliable clean starting point.

Does that make a difference or does the problem persist?