heidisql bug report

here the error detail.
date/time : 2015-01-12, 19:21:59, 544ms
computer name : HANG-PC
user name : Jonathan <admin>
registered owner : <MY EMAIL>
operating system : Windows 8 x64 build 9200
system language : Chinese (Simplified)
system up time : 3 hours 17 minutes
program up time : 34 seconds
processors : 4x Intel(R) Core(TM) i5-3450 CPU @ 3.10GHz
physical memory : 8306/12249 MB (free/total)
free disk space : (C:) 585.45 GB
display mode : 1920x1080, 32 bit
process id : $1f60
allocated memory : 163.16 MB
largest free block : 131025.99 GB
executable : heidisql.exe
exec. date/time : 2015-01-12 19:21
version : 9.1.0.4896
compiled with : Delphi XE5
madExcept version : 4.0.8.1
callstack crc : $2ef15873, $df5e2950, $df5e2950
exception number : 1
exception class : Unknown
exception message : Unknown.

main thread ($31c):
00a727da heidisql.exe dbconnection 2375 +47 TAdoDBConnection.Query
7ff9c718 DBNETLIB.DLL ConnectionRead
00a7250c heidisql.exe dbconnection 2347 +19 TAdoDBConnection.Query
00a8ae80 heidisql.exe dbconnection 5130 +3 TAdoDBQuery.Execute
00c16a15 heidisql.exe Main 4831 +134 TMainForm.DataGridBeforePaint
008c92a9 heidisql.exe VirtualTrees 21198 +2 TBaseVirtualTree.DoBeforePaint
008e1bca heidisql.exe VirtualTrees 31781 +5 TBaseVirtualTree.PaintTree
008d3997 heidisql.exe VirtualTrees 25419 +22 TBaseVirtualTree.Paint
006a4326 heidisql.exe Vcl.Controls TCustomControl.PaintWindow
0069b0d3 heidisql.exe Vcl.Controls TWinControl.PaintHandler
0069bf6f heidisql.exe Vcl.Controls TWinControl.WMPaint
006a42b8 heidisql.exe Vcl.Controls TCustomControl.WMPaint
008c58d1 heidisql.exe VirtualTrees 19414 +8 TBaseVirtualTree.WMPaint
0040cb1e heidisql.exe System TObject.Dispatch
00693773 heidisql.exe Vcl.Controls TControl.WndProc
0069ae3e heidisql.exe Vcl.Controls TWinControl.WndProc
008d829b heidisql.exe VirtualTrees 27144 +32 TBaseVirtualTree.WndProc
0069a07a heidisql.exe Vcl.Controls TWinControl.MainWndProc
005da9b3 heidisql.exe System.Classes StdWndProc
7ff9e02b ntdll.dll KiUserCallbackDispatcher
7ff9df06 user32.dll DispatchMessageW
004ec989 heidisql.exe madExcept HandleException
004f9474 heidisql.exe madExcept InterceptAHandleExcept
0069a09e heidisql.exe Vcl.Controls TWinControl.MainWndProc
005da9b3 heidisql.exe System.Classes StdWndProc
7ff9e02b ntdll.dll KiUserCallbackDispatcher
7ff9df06 user32.dll DispatchMessageW
0081328f heidisql.exe Vcl.Forms TApplication.ProcessMessage
00813303 heidisql.exe Vcl.Forms TApplication.HandleMessage
008137ef heidisql.exe Vcl.Forms TApplication.Run
00c5a087 heidisql.exe heidisql 77 +24 initialization
7ff9df7d KERNEL32.DLL BaseThreadInitThunk
7ff9e029 ntdll.dll RtlUserThreadStart