When installing , you may encounter an error stating "Setup cannot find ProPlus.WW\propsww2.cab". This usually happens because the .cab file on your installation media is corrupt or missing. Guide to Fixing the propsww2.cab Error
To summarize:
Restart your installation. The setup will be forced to look at your current installation media rather than a corrupted local cache. 4. Ensuring "High Quality" Performance download proplusww propsww2cab office high quality