Until they get this fixed, the best bet is to uninstall the current version and install the latest working version 0.9.1.3 from https://www.ads-software.com/extend/plugins/w3-total-cache/download/
You should not use version 0.9.2.0 or 0.9.2.1 – wait for a new update that fixes the issues.
If you did update your plugin and you need need uninstall the
previous version. You will need to go into your blogs htaccess
file and remove all the content from…
# BEGIN W3TC Skip 404 error handling by WordPress for static files
…to…
# END W3TC Page Cache
Make sure you save a backup copy of this htaccess file. Then
when you activate the older version the htaccess file
will be updated.
