Avast don't update virus database! he show error

[ammoune78]

Hi! I have avast v8.0 and when i launch update i have this message:

Connecting to repository http://download.ff.avast.com/mac/vpsmac
Downloading vpsmac.lat...
Downloading vpsmac14011401.inf...
Downloading vpsmac14011401.inf... (retry 1)
Downloading vpsmac14011401.inf... (retry 2)
Download failed [exit code 28]
Fall back to full update.
Downloading vpsmac14020200.inf...
Downloading vpsmac14020200.inf... (retry 1)
Downloading vpsmac14020200.inf... (retry 2)
Downloading vpsmac14020200.ful...
Downloading vpsmac14020200.ful... (retry 1)
Downloading vpsmac14020200.ful... (retry 2)
Download failed [exit code 28]
Update failed.
Cannot perform HTTP request. [1c]
tar: install/update.sh: Not found in archive
tar: Error exit delayed from previous errors.
+ RAW='/Library/Application Support/Avast/files/Setup/filedir/vpsmac.raw'
+ '[' '!' -f '/Library/Application Support/Avast/files/Setup/filedir/vpsmac.raw' ']'
+ VERSION=14011401
+ '[' -z 14011401 ']'
+ FILES_DIR='/Library/Application Support/Avast/files'
+ '[' -d '/Library/Application Support/Avast/files/defs/14011401' ']'
+ echo 'Version already installed?'
Version already installed?
+ exit 1
Connecting to repository http://download.ff.avast.com/mac/AAFM
Downloading AAFM.lat...
Downloading AAFM.lat... (retry 1)
Downloading AAFM.lat... (retry 2)
Download failed [exit code 28]
Update aborted.
Cannot perform HTTP request. [1c]
install/update.sh
No program update available.
Please help!

[DavidAtk]

I suggested a fix for this is in the following topic:
forum.avast.com/index.php?topic=142710.0

Cheers,
  David