GetFileWithRetry: vps-11113001-11113000.vpu downloaded and verified\b0\par\cf1 01.12.2011 16:08:00 package: \b\cf2 DldPackage: C:\\Program Files\\Alwil Software\\Avast4\\Setup\\vps-11113001-11113000.vpu, returned 0x00000000\b0\par\cf1 01.12.2011 16:08:01 package: \b\cf3 PerformDiff: Ok\b0\par\cf1 01.12.2011 16:09:16 package: \b\cf1 ERROR PerformPkgDiff: DSA_FileVerify(C:\\Program Files\\Alwil Software\\Avast4\\Setup\\vps-11113001.vpu) failed, error 0x2000000B\b0\par\cf1 01.12.2011 16:09:16 general: \b\cf1 Err:Invalid file signature. Setup will terminate.\b0\par[/html]
Am suggesting manual download and update.