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Vps: Updated
(previous version: 080626-1, updated version: 080627-0)
but after reboot the about screen keeps on saying ver 080611 and the eroor which was written above was on my event viewer log
I know you have reinstalled and in theory that should have resolved this, but it might be worth trying a repair of avast. Add Remove programs, select 'avast! Anti-Virus,' click the Change/Remove button and scroll down to Repair, click next and follow. Now check the about avast and see what is reported.
I don't know if it might be that the VPS version contained within the new installation of avast is 080611-0 so an update would be needed.
Is there a pop-up from the Windows Security Center reporting the AV out of date, which I would expect if the VPS was that old, e.g. over a week old. Also check your system date and ensure the day month and year are correct.
If the repair doesn't resolve this problem and a reinstall didn't the only thing I can think of is that the reinstallation isn't completing correctly. So a clean reinstall might be worth a try.
Download the latest version of avast
http://www.avast.com/eng/download-avast-home.html and save it to your HDD, somewhere you can find it again. Use that when you reinstall.
Download the avast! Uninstall Utility,
find it here and save it to your HDD.
1. Now uninstall (using add remove programs, if you can't do that start from the next step), reboot.
2. run the avast! Uninstall Utility, reboot
3. install the latest version, reboot.