When I see such an error I download the latest Free Avg version. Then I uninstall the current one and then reboot if asked. Then I install the freshly downloaded version. I've lost count how often I've done this.
I use AVG free and have for the past few years no issues with 9.o but a few days ago I noticed that my spyware and antivirus stated out of date....tried to update and it gets near the end of downloading then a warning stating "general error" tried to remove and this error comes up:
Local machine: installation failed
Error: Checking of state of the item file sc.dat failed.
The file or directory is corrupted and unreadable. %FILE% = "C:\Program Files\AVG\AVG9\sc.dat" tried to download a repair kit and it comes up the file name states it is a binary file and would I like to save or cancel..I hit save and nothing happens..tried to use file name through "run" on the computer and it doesn't find the file...tried to open my computer from safe mode and a lon list of file names like through the C: prompt fills the screen and nothing happens...regedit and deleting the registry keys has not worked either any help is appreciated