Running MBAM 1.41 paid on Win XP Pro SP3. Other security apps include AntiVir Premium, Outpost Pro (without using its IP Blocklist), and Zemana Antilogger. The program runs well with one exception. For the life of me I can't get the IP Protection to work. The error code that shows in the MBAM logs is (null) ERROR IP protection failed: PfMakeLog failed with error code 21. Any assistance in resolving this would be greatly appreciated.