resfresh database tab caused defect

I cannot reproduce the defect
I got

date/time : 2011-06-06, 12:28:12, 702ms
operating system : Windows XP Service Pack 3 build 2600
system language : English
system up time : 3 days 21 hours
program up time : 37 minutes 25 seconds
processors : 2x Intel(R) Pentium(R) 4 CPU 3.00GHz
physical memory : 1882/3063 MB (free/total)
free disk space : (C:) 33.86 GB
display mode : 1280x1024, 32 bit
process id : $c6c
allocated memory : 21.62 MB
executable : heidisql.exe
exec. date/time : 2011-06-06 11:50
version : 6.0.0.3870
compiled with : Delphi XE
madExcept version : 3.0m beta 1
callstack crc : $400672cd, $9b087310, $9b087310
exception number : 1
exception class : EAccessViolation
exception message : Access violation at address 007E0E73 in module 'heidisql.exe'. Read of address 00000056.

main thread ($e30):
007e0e73 heidisql.exe Main 5540 +6 TMainForm.GetActiveDatabase
007dbcb9 heidisql.exe Main 4398 +2 TMainForm.ListTablesInitNode
00638a53 heidisql.exe VirtualTrees TBaseVirtualTree.DoInitNode
0063c95c heidisql.exe VirtualTrees TBaseVirtualTree.InitNode
00649dca heidisql.exe VirtualTrees TBaseVirtualTree.ValidateNode
00649d97 heidisql.exe VirtualTrees TBaseVirtualTree.ValidateChildren
0064898c heidisql.exe VirtualTrees TBaseVirtualTree.Sort
00648a9e heidisql.exe VirtualTrees DoSort
00648b3e heidisql.exe VirtualTrees TBaseVirtualTree.SortTree
00642409 heidisql.exe VirtualTrees TBaseVirtualTree.EndUpdate
007db6c2 heidisql.exe Main 4329 +46 TMainForm.ListTablesBeforePaint
0063735b heidisql.exe VirtualTrees TBaseVirtualTree.DoBeforePaint
00645c7d heidisql.exe VirtualTrees TBaseVirtualTree.PaintTree
004e8f68 heidisql.exe Controls TControl.WndProc
004ececc heidisql.exe Controls TWinControl.MainWndProc
004ab73c heidisql.exe Classes StdWndProc
0063df01 heidisql.exe VirtualTrees TBaseVirtualTree.Paint
004f328b heidisql.exe Controls TCustomControl.PaintWindow
004ed9e5 heidisql.exe Controls TWinControl.PaintHandler
004ee1c4 heidisql.exe Controls TWinControl.WMPaint
004f3225 heidisql.exe Controls TCustomControl.WMPaint
00634df5 heidisql.exe VirtualTrees TBaseVirtualTree.WMPaint
004e8f68 heidisql.exe Controls TControl.WndProc
004ed82c heidisql.exe Controls TWinControl.WndProc
006407dc heidisql.exe VirtualTrees TBaseVirtualTree.WndProc
004ececc heidisql.exe Controls TWinControl.MainWndProc
004ab73c heidisql.exe Classes StdWndProc
7c90e470 ntdll.dll KiUserCallbackDispatcher


Maybe this is helpful