I got this error in nlite when integrating the addon: edit: I think that error came up in nlite because I added IE8-WindowsXP-KB974455-x86-ENU IE8 Cumulative security update to nlite hotfix list instead of adding it in your marvelous (AWESOME) Update Pack/Addon creator IE8 section. Testing and letting you know how it goes. Can i add this registry key entry in "Reg tweaks" section of IE8 in Addon Maker? "Software\Microsoft\Internet Explorer\Main","IE8RunOnceCompletionTime",1,d6,74,a1,f0,a8,d1,c9,01 or do I have to write it like this HKCU,"Software\Microsoft\Internet Explorer\Main","IE8RunOnceCompletionTime",1,d6,74,a1,f0,a8,d1,c9,01 ????