Yes using the latest beta build, downloaded that morning. At first i didn't realize i could move the popup error Lua window (since it blocks the center of your screen right over the character). I was able to just move the window (have to leave it open) and still use healbot, its just spamming errors non-stop, that one in particular. Happens also when i'm in Holy mode as well. Though i was able to setup all my spells (imported from non-beta account) and healbot was "working" otherwise, any time i make changes to the spells i have to reload my entire interface (with a /reload) in order to have the changes kick in, thats not so bad.