WowAce

What steps will reproduce the problem?
1. log in

What version of the product are you using?
r300

Do you have an error log of what happened?
4x Grid2-3.3.0.300\GridFrame.lua:275: attempt to call method 'GetFrameUnit' (a nil value)
CallbackHandler-1.0-5 (Ace3):147: in function <...Ons\Ace3\CallbackHandler-1.0\CallbackHandler-1.0.lua:147>
<string>:"safecall Dispatcher[3]":4: in function <[string "safecall Dispatcher[3]"]:4>
<in C code>: ?
<string>:"safecall Dispatcher[3]":13: in function `?'
CallbackHandler-1.0-5 (Ace3):92: in function `SendMessage'
Grid2-3.3.0.300\GridRoster.lua:147: in function `?'
CallbackHandler-1.0-5 (Ace3):147: in function <...Ons\Ace3\CallbackHandler-1.0\CallbackHandler-1.0.lua:147>
<string>:"safecall Dispatcher[2]":4: in function <[string "safecall Dispatcher[2]"]:4>
<in C code>: ?
<string>:"safecall Dispatcher[2]":13: in function `?'
CallbackHandler-1.0-5 (Ace3):92: in function `Fire'
AceEvent-3.0-3 (Ace3):120: in function <Ace3\AceEvent-3.0\AceEvent-3.0.lua:119>

  ---

Fixed in rev301.