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\[b]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
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Am suggesting manual download and update.