WowAce

I get this error when I do a dungeon in Cata Classic:

1x [ADDON_ACTION_BLOCKED] AddOn 'ShadowedUnitFrames' tried to call the protected function 'CheckInteractDistance()'.
[string "@!BugGrabber/BugGrabber.lua"]:481: in function <!BugGrabber/BugGrabber.lua:481>
[string "=[C]"]: in function `CheckInteractDistance'
[string "@ShadowedUnitFrames/modules/range.lua"]:53: in function <ShadowedUnitFrames/modules/range.lua:33>
[string "@ShadowedUnitFrames/modules/range.lua"]:100: in function `?'
[string "@ShadowedUnitFrames/modules/units.lua"]:21: in function `FullUpdate'
[string "@ShadowedUnitFrames/modules/units.lua"]:342: in function <ShadowedUnitFrames/modules/units.lua:342>

Locals:
_ = Frame {
RegisterEvent = <function> defined @!BugGrabber/BugGrabber.lua:487
0 = <userdata>
UnregisterEvent = <function> defined @!BugGrabber/BugGrabber.lua:487
SetScript = <function> defined @!BugGrabber/BugGrabber.lua:487
}
event = "ADDON_ACTION_BLOCKED"
events = <table> {
ADDON_ACTION_BLOCKED = <function> defined @!BugGrabber/BugGrabber.lua:553
ADDON_ACTION_FORBIDDEN = <function> defined @!BugGrabber/BugGrabber.lua:553
PLAYER_LOGIN = <function> defined @!BugGrabber/BugGrabber.lua:547
LUA_WARNING = <function> defined @!BugGrabber/BugGrabber.lua:562
ADDON_LOADED = <function> defined @!BugGrabber/BugGrabber.lua:507
}

not in a dungeon, but same