MajorSophos error

[Baccari, Lou]

Hello,

 I'm trying to use the MajorSophos.sh script from http://www.tippingmar.com/majorsophos/ and I'm receiving the error listed below,  any ideas as to how to correct the problem?

Thanks,

Lou

Starting the MailScanner Sophos installation script
+ '[' no = yes ']'
+ /usr/sbin/Sophos.install
Clearing out old default Sophos installation libraries
Uncompressing Sophos distribution
/usr/sbin/Sophos.install: line 28: uncompress: command not found
Please cd into the directory containing the Sophos install.sh
script and run this command again.
+ sweepVer
+ '[' -f /usr/lib/MailScanner/sophos-wrapper ']'
+ '[' -f /usr/local/Sophos/bin/sweep ']'
+ printout 'Current Sophos version information follows:'
+ '[' no = no ']'
+ echo Current Sophos version information follows:
Current Sophos version information follows:
++ /usr/lib/MailScanner/sophos-wrapper /usr/local/Sophos -v
++ egrep 'Product|Released'
Error initialising detection engine - missing main virus data