What steps will reproduce the problem?

>>  Clicking yes to see mail .. first time this showed

What is the expected output? What do you see instead?

>> to see mail info, which i got at half a sec later the error came.

What version of the product are you using?

4.3.001

Do you have an error log of what happened?

Date: 2012-01-10 19:53:09
ID: 2
Error occured in: Global
Count: 3
Message: ..\AddOns\Altoholic\Frames\Activity.lua line 103:
   bad argument #2 to 'format' (string expected, got nil)
Debug:
   [C]: ?
   [C]: format()
   Altoholic\Frames\Activity.lua:103 Update()
   Altoholic\Frames\TabSummary.lua:114 MenuItem_OnClick()
   Altoholic\Comm.lua:535 ButtonHandler()
   Altoholic\Altoholic.lua:795 MsgBox_OnClick()
   [string "*:OnClick"]:1:
      [string "*:OnClick"]:1

AND

Date: 2012-01-10 20:03:45
ID: 3
Error occured in: Global
Count: 1
Message: ..\AddOns\Altoholic\Characters.lua line 259:
   attempt to index field '?' (a nil value)
Debug:
   [C]: ?
   Altoholic\Characters.lua:259 GetLineType()
   Altoholic\Frames\Activity.lua:173 OnEnter()
   [string "*:OnEnter"]:1:
      [string "*:OnEnter"]:1