Range bars On Paint error

[ATI user]

I have a custom indicator that works perfectly on min and sec charts however when I try to run on Range bar charts I get the following error in Trace file...no error in Log file

2010-03-07 10:05:55:614 (Market Replay Connection) Data.Bars.GetBarsNow: instrument='NQ 03-10' from='2010-03-05 17:00:00' to='2010-03-07 23:59:59' period=1 Tick splitAdjusted=False dividendAdjusted=False bars=0 session='930 to 930'
2010-03-07 10:05:57:332 UI (re)load complete, took 3.1 secs, 107.5 secs after app start
2010-03-07 10:06:11:889 Chart.ChartControl.OnPaint: Object reference not set to an instance of an object.
2010-03-07 10:06:12:493 Chart.ChartControl.OnPaint: Object reference not set to an instance of an object.
2010-03-07 10:06:21:931 Gui.WorkspaceOptions.ApplicationExit

I will comment out code in the cs to see if the problem is in the code....however at this point I do not know why there should be any difference between a min and range chart...

possible bug in beta 10?

[ATI user]

problem was in code

range bars have different time at session open than min and sec bars

code was checking for a specific time to set up an array...never happened...result was null object in drawtext statement