x-perl not displaying focus frame

[missdemeaner]

I set the mod to display focus frame, but when i select a target and right click to set focus, the focus frame will not display. Sometimes I get a LUA error (sorry don't have text cause can't reproduce it). Most times I don't get an error.

I'm also running DBM and bartender and healbot. But issue still happens when those are disabled.

Any ideas?

Help is much appreciated!

UPDATE: Turned off all addons except x-perl and got this error when trying to "set focus"
*** Taint Forced *** has been blocked from an action only available to the Blizzard UI. You can disable this addon and reload the UI.

Any ideas folks?

Thanks!