Log Error: "A content update package from the management server failed to unzip"?

Hi all,

I have an issue affecting some of the application servers which act as GUPs.

some of them are unable to update their antivirus definitions and the log states the error:

"A content update package from the management server failed to unzip. The Update will be reattempted"

The servers download the content from themselves since the are GUPs, but the update package cannot be unzipped...

this is only affecting a few of the servers, the others are working fine.

Any explination on why this is occuring?