Getting this message, and the plugin does not run anymore
Another Plugin or Theme is using 'wpfbogp_callback' to hadle output buffers.
This prevents actively outputing the buffer on-the-fly and will severely degrade the performance of this (and many other) Plugins.
Consider disabling caching and compression plugins (at least during the scanning process).
The plugin takes forever to start running (and freezes up my admin) after I installed Wordfence plugin. Are the two incompatible?