"Cannot read that as a ZipFile" error with the Act4Work Updater

If you receive the above error when running the Act4Work updater or downloading any updates, it is likely your Antivirus/Firewall program has blocked the updater. To fix this error, please whitelist the Act4Work updater folder in your Antivirus/Firewall. The location of this folder is: C:\Program Files (x86)\Act4Work\Act4Work Updater

You can also temporarily disable the security software and run the updater again to see if that allows the updater to run without error.