I'm also getting this error occasionally (not always) but it's not limited to 60+ characters. Here's the error I got today and although the hunter is level 70, I have seen the error generate from lower level characters. Is it possible this occurred since I didn't exit the client after playing my hunter but rather only logged out and logged in an alt? I should also add that while the error generated, the profile appeared to copy from the hunter profile correctly.
[2007/05/12 10:16:27-11-x4]: AceDB-2.0: Cannot copy from profile "class/Hunter", it does not exist.:
FuBar-33424\FuBar.lua:1521: in function <Interface\AddOns\FuBar\FuBar.lua:1417>
<in C code>: in function `pcall'
AceDB-2.0-33362 (FuBar):24: in function <Interface\AddOns\FuBar\libs\AceDB-2.0\AceDB-2.0.lua:23>
AceDB-2.0-33362 (FuBar):1649: in function `func'
Dewdrop-2.0-35152 (BugSack):525: in function <...face\AddOns\BugSack\Libs\Dewdrop-2.0\Dewdrop-2.0.lua:464>