Regarding the WP-CLI error, I could not get back to earlier since I was not able to get WP-CLI working right. Sorry about that.
Just add this line to the top of functions.php at line number 16 –
global $theme_cache, $options_cache, $mo_theme;
and WP-CLI should work fine.
Related to the long discussion in this issue – https://github.com/wp-cli/wp-cli/issues/2289
We will issue an update next week with the above change for Fusion and hence this change won’t be required in future updates.