If you are unable to update BlackFog Privacy to the latest version you may have a corrupted installer. Initially, it will remove the older version first. If the older version of the installer has been corrupted or removed then it will not uninstall and you will receive a message like:
Error reading from file c:\Windows\Installer\980d934.msi
You can resolve this problem by locating the original installer for the version you are running and run that version again. Instead of installing you will see the following screen.
Click “Remove” or “Repair”. You may then run the updater from the existing version to update to the latest edition.