Something has corrupted your CTF files and the following should remove them so new copies can be downloaded.
You must be logged into the system as a computer administrator when you create and run the following file.
Using NOTEPAD create a file named ResetCTF.cmd and copy/paste the following two lines in it…
Then save the file to a location of your choice.
FOR /F “tokens=2*” %%a IN (‘reg query “HKEY_LOCAL_MACHINE\SOFTWARE\AVG\Avg8” /v “AvgAllUsersDir”‘) DO (SET avgdatapath=%%~fb)
When you save the file… I suggest you use the file name ResetCTF.cmd and make certain that the Save as type option is set as All Files and not Text Document
After you save it, to run the file with Windows 2000 or XP just click on the file. In Vista you need to right click and select “Run as Administrator”
If it was created properly, you should see a black Command box flash on the screen briefly, if it was not created properly NOTEPAD or your default text editor will open.
Once you have run that file… try updating AVG again.
If the problem persists… Then something must be corrupting your CTF files. This can be either a disk/file corruption or the corruption chould be happening when the file is being downloaded. The following should help if its a normal file/disk corruption or a problem in your system’s cache/temp files.