The spam free wordpress plugin works perfectly when W3 total cache is disabled but when I enable the caching plugin (with page cache, database cache and object cache set to disc - not enhanced) I always get the generic error stating this:
"Spam Free WordPress could not retrieve the password from the server. It may be necessary to do one, or all, of the following. Turn on the Old Password Fields option, turn off Nonce Security, or to turn on Generate Comment Form. Troubleshooting."
I've got these settings the way it's asked to configure in the error message, but that doesn't work in combination with W3TC.
Any help would be appreciated...