Bug Report: - System Error. Code: 1400. Invalid window handle.

date/time : 2014-03-24, 16:31:09, 827ms
computer name : XX
user name : John <admin>
registered owner : John
operating system : Windows 8 x64 build 9200
system language : English
system up time : 9 days 8 hours
program up time : 2 days
processors : 8x Intel(R) Core(TM) i7 CPU 860 @ 2.80GHz
physical memory : 3785/8151 MB (free/total)
free disk space : (C:) 324.23 GB
display mode : 1680x1050, 32 bit
process id : $1fbc
allocated memory : 47.96 MB
largest free block : 131029.99 GB
executable : heidisql.exe
exec. date/time : 2014-03-22 16:10
version : 8.3.0.4736
compiled with : Delphi XE5
madExcept version : 4.0.8.1
callstack crc : $b7eab278, $75bc61d4, $75bc61d4
exception number : 1
exception class : EOSError
exception message : System Error. Code: 1400. Invalid window handle.

main thread ($1b4c):
004839ee heidisql.exe System.SysUtils RaiseLastOSError
0048394e heidisql.exe System.SysUtils RaiseLastOSError
00699294 heidisql.exe Vcl.Controls TWinControl.DestroyWindowHandle
00696118 heidisql.exe Vcl.Controls TWinControl.Destroy
0069614d heidisql.exe Vcl.Controls TWinControl.Destroy
006a3d7c heidisql.exe Vcl.Controls TCustomControl.Destroy
0069614d heidisql.exe Vcl.Controls TWinControl.Destroy
00800e7e heidisql.exe Vcl.Forms TScrollingWinControl.Destroy
00802b52 heidisql.exe Vcl.Forms TCustomForm.Destroy
0040c395 heidisql.exe System TObject.Free
005d6d59 heidisql.exe System.Classes TComponent.DestroyComponents
007ff336 heidisql.exe Vcl.Forms DoneApplication
00473040 heidisql.exe System.SysUtils DoExitProc
0040f339 heidisql.exe System @Halt0
00c46d76 heidisql.exe heidisql 79 +26 initialization
7ffbbee2 KERNEL32.DLL BaseThreadInitThunk
7ffbc124 ntdll.dll RtlUserThreadStart