error while updating Avast6

hi,
I have faced error while was updating my Avast6. this error was a windows error and Avast didn’t update.
can someone help me to solve this problem.
best regards,
Julia

Please, upload (attach) the avast log:
C:\ProgramData\AVAST Software\Avast\log\Setup.log
or C:\Program Files\Alwil Software\Avast5\Setup\setup.log

If the file is too big for the forum, post the last 400-500 lines of it.

You say this was a Windows error. Which error exactly? What consequences do you see? After you reboot, is avast updating correctly? If it is not, have you tried repairing avast and rebooting again?