QUOTE(wicked @ 21.04.2009 06:07)

by default in your windows "application data\avp6\bases" is hidden (please show all hidden files and folders) then go to that path and delete all contents of bases folder, then try to update again, make sure to disable self defense so you can delete those file.

thanks for details

I delete all files in bases folder and after that kasper notify me like "black.lst is corrupted or either missing, run updater to fix this problem".
i run updater again and the problem is same, but this time the computer is successfully updating from "Kasper Lab update server" or any update distribution folder

. Now the problem is only happening when i try to update it through admin kit "Invalid file signature".
any suggestion to fix the problem of admin kit ?