What is the expected output? What do you see instead?
Simply logging in results in an error, and there is no Broker Text displayed (although the tooltip appears to be okay)  I removed the .lua file in the WTF directory and the error still occurs.

What version of the product are you using?
r98

Do you have an error log of what happened?
Date: 2010-10-26 18:51:02
ID: 1
Error occured in: Global
Count: 1
Message: ..\AddOns\Broker_Cashflow\Broker_Cashflow.lua line 599:
   attempt to compare string with number
Debug:
   (tail call): ?
   Broker_Cashflow\Broker_Cashflow.lua:599 UpdateLabel()
   Broker_Cashflow\Broker_Cashflow.lua:969
      Broker_Cashflow\Broker_Cashflow.lua:837
   (tail call): ?
   [C]: ?
   [string "safecall Dispatcher[1]"]:9:
      [string "safecall Dispatcher[1]"]:5
   (tail call): ?
   Ace3\AceAddon-3.0\AceAddon-3.0.lua:539 EnableAddon()
   Ace3\AceAddon-3.0\AceAddon-3.0.lua:629
      Ace3\AceAddon-3.0\AceAddon-3.0.lua:615
   [C]: ?
   ...dOns\Grid2FrameHigherLimit\Grid2FrameHigherLimit.lua:3 LoadAddOn()
   ..\FrameXML\UIParent.lua:242 UIParentLoadAddOn()
   ..\FrameXML\UIParent.lua:265 CombatLog_LoadUI()
   ..\FrameXML\UIParent.lua:519
      ..\FrameXML\UIParent.lua:492