VisualHeal and the library LibHealComm were not updated because this has been built into the client. Perhaps your UF addon has not been updated to support the new API?
http://forums.wowace.com/showthread.php?t=16992&page=42
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"You'd be surprised how many people violate this simple principle every day of their lives and try to fit square pegs into round holes, ignoring the clear reality that Things Are As They Are." -Benjamin Hoff,
The Tao of Pooh