Dashboard Update to 4.0.8 Fails to Work

Good Day!

I just noticed that the WPMU Dev Dashboard has not been updated on just one of my web sites. It is still at version 4.0.2. I attempted the update both from the web site's dashboard as well as the one here at wpmudev.org and both failed.

Any ideas? I have not yet tried to remove and reinstall the plugin.

Thanks!

Jim