[Bug Report]

date/time          : 2014-04-08, 08:01:03, 71ms
operating system   : Windows 7 Service Pack 1 build 7601
system language    : Turkish
system up time     : 1 day
program up time    : 1 minute 21 seconds
processors         : 2x Intel(R) Core(TM)2 CPU T5500 @ 1.66GHz
physical memory    : 1064/3062 MB (free/total)
free disk space    : (C:) 18,26 GB
display mode       : 1280x800, 32 bit
process id         : $12cc
allocated memory   : 54,73 MB
largest free block : 1,30 GB
executable         : heidisql.exe
exec. date/time    : 2014-04-08 07:59
version            : 8.3.0.4752
compiled with      : Delphi XE5
madExcept version  : 4.0.8.1
callstack crc      : $d8b79e5a, $6e86ef98, $6e86ef98
exception number   : 1
exception class    : EAccessViolation
exception message  : Access violation at address 00951390 in module 'heidisql.exe'. Read of address 00000064.
main thread ($17ac):
00951390 heidisql.exe Main           10686   +3 TMainForm.DBtreeBeforeCellPaint
007004f5 heidisql.exe VirtualTrees   21161  +11 TBaseVirtualTree.DoBeforeCellPaint
00708836 heidisql.exe VirtualTrees   25918  +25 TBaseVirtualTree.PrepareCell
00712618 heidisql.exe VirtualTrees   32095 +319 TBaseVirtualTree.PaintTree
007077a5 heidisql.exe VirtualTrees   25419  +22 TBaseVirtualTree.Paint
005ba963 heidisql.exe Vcl.Controls              TCustomControl.PaintWindow
005b4c9d heidisql.exe Vcl.Controls              TWinControl.PaintHandler
005b5490 heidisql.exe Vcl.Controls              TWinControl.WMPaint
005ba8fd heidisql.exe Vcl.Controls              TCustomControl.WMPaint
006fd9ed heidisql.exe VirtualTrees   19414   +8 TBaseVirtualTree.WMPaint
005affb1 heidisql.exe Vcl.Controls              TControl.WndProc
005b4ad1 heidisql.exe Vcl.Controls              TWinControl.WndProc
0070a9ed heidisql.exe VirtualTrees   27144  +32 TBaseVirtualTree.WndProc
005b4114 heidisql.exe Vcl.Controls              TWinControl.MainWndProc
0053b600 heidisql.exe System.Classes            StdWndProc
7796702b ntdll.dll                              KiUserCallbackDispatcher
005b77cd heidisql.exe Vcl.Controls              TWinControl.Repaint
00948068 heidisql.exe Main            7910   +2 TMainForm.DatabaseChanged
0082eb54 heidisql.exe dbconnection    1930  +58 TMySQLConnection.Query
00830e6e heidisql.exe dbconnection    2265   +8 TDBConnection.SetDatabase
0082bb14 heidisql.exe dbconnection    1501 +122 TMySQLConnection.SetActive
0082e601 heidisql.exe dbconnection    1825   +6 TMySQLConnection.Ping
0082e875 heidisql.exe dbconnection    1882  +10 TMySQLConnection.Query
0083a8d8 heidisql.exe dbconnection    4155   +3 TMySQLQuery.Execute
00831ff1 heidisql.exe dbconnection    2524   +5 TDBConnection.GetResults
00832d2c heidisql.exe dbconnection    2778   +1 TDBConnection.GetCol
00831ad1 heidisql.exe dbconnection    2481   +4 TMySQLConnection.GetAllDatabases
00831f8b heidisql.exe dbconnection    2514   +2 TDBConnection.RefreshAllDatabases
0094827c heidisql.exe Main            8007  +19 TMainForm.RefreshTree
00938d9e heidisql.exe Main            3848   +5 TMainForm.actRefreshExecute
0053a8ef heidisql.exe System.Classes            TBasicAction.Execute
005944c7 heidisql.exe Vcl.ActnList              TCustomAction.Execute
0053a78f heidisql.exe System.Classes            TBasicActionLink.Execute
0066b13f heidisql.exe Vcl.Menus                 TMenuItem.Click
0066ccb3 heidisql.exe Vcl.Menus                 DoClick
0066cd9f heidisql.exe Vcl.Menus                 TMenu.IsShortCut
005b6eac heidisql.exe Vcl.Controls              TWinControl.IsMenuKey
005b6f21 heidisql.exe Vcl.Controls              TWinControl.CNKeyDown
005affb1 heidisql.exe Vcl.Controls              TControl.WndProc
005b4ad1 heidisql.exe Vcl.Controls              TWinControl.WndProc
0070a9ed heidisql.exe VirtualTrees   27144  +32 TBaseVirtualTree.WndProc
005b4114 heidisql.exe Vcl.Controls              TWinControl.MainWndProc
0053b600 heidisql.exe System.Classes            StdWndProc
7722557d USER32.dll                             SendMessageW
00684e40 heidisql.exe Vcl.Forms                 TApplication.IsKeyMsg
006850e7 heidisql.exe Vcl.Forms                 TApplication.ProcessMessage
0068514e heidisql.exe Vcl.Forms                 TApplication.HandleMessage
00685489 heidisql.exe Vcl.Forms                 TApplication.Run
75cded5a kernel32.dll                           BaseThreadInitThunk