Problem with Find and Replace on Hex Mode

Exception description:
I tried to find 0D0A in hex and replace to '-' as text.

Access violation at address 0000000000AEAB83 in module 'PSPad.exe'. Read of address 0000000000000000.

Exception class: EAccessViolation
Exception address: 0000000000AEAB83
----------------------------------------------------------------------------------------------------
Stack list, generated 19/08/2022 14:02:52
[0000000000AEAB83] uChildParent.TfChildParent.GetHexEncoding (Line 1150, "uChildParent.pas" + 2) + $1A
[0000000000863B58] JclDebug.JclCreateStackList (Line 5308, "JclDebug.pas" + 1) + $3F
[0000000000863AC6] JclDebug.DoExceptionStackTrace (Line 5249, "JclDebug.pas" + 20) + $15
[00000000008654B2] JclDebug.DoExceptNotify (Line 6276, "JclDebug.pas" + 7) + $0
[0000000000853955] JclHookExcept.TNotifierItem.DoNotify (Line 272, "JclHookExcept.pas" + 5) + $11
[0000000000853B9B] JclHookExcept.DoExceptNotify (Line 339, "JclHookExcept.pas" + 13) + $2B
[0000000000853D57] JclHookExcept.HookedExceptObjProc (Line 395, "JclHookExcept.pas" + 5) + $0
[000000000041139E] System.@DelphiExceptionHandler + $26E
[00007FF81E73229F] Unknown function at __chkstk + $11F
[00007FF81E6E1454] RtlRaiseException + $434
[00007FF81E730DCE] KiUserExceptionDispatcher + $2E
[0000000000AEAB83] uChildParent.TfChildParent.GetHexEncoding (Line 1150, "uChildParent.pas" + 2) + $1A
[0000000000C9569B] uFindHex.TfFindHex.FillBuffer (Line 170, "uFindHex.pas" + 3) + $17
[0000000000C950F7] uFindHex.TfFindHex.bOKClick (Line 87, "uFindHex.pas" + 9) + $32
[00000000007FB343] Vcl.Controls.TControl.Click + $A3
[000000000064CECB] Vcl.StdCtrls.TCustomButton.Click + $2B
[000000000064E754] Vcl.StdCtrls.TCustomButton.CNCommand + $24
[000000000040FEF5] System.TObject.Dispatch + $45
[00000000007FAC40] Vcl.Controls.TControl.WndProc + $370
[0000000000801EA0] Vcl.Controls.TWinControl.WndProc + $9A0
[000000000064C8B5] Vcl.StdCtrls.TButtonControl.WndProc + $95
[00000000007FA732] Vcl.Controls.TControl.Perform + $32
[000000000080209E] Vcl.Controls.DoControlMsg + $2E
[0000000000803468] Vcl.Controls.TWinControl.WMCommand + $18
[00000000007ACB58] Vcl.Forms.TCustomForm.WMCommand + $58
[000000000040FEF5] System.TObject.Dispatch + $45
[00000000007FAC40] Vcl.Controls.TControl.WndProc + $370
[0000000000801EA0] Vcl.Controls.TWinControl.WndProc + $9A0
[00000000007A7C4E] Vcl.Forms.TCustomForm.WndProc + $99E
[000000000080101C] Vcl.Controls.TWinControl.MainWndProc + $2C
[00000000005561B6] System.Classes.StdWndProc + $26
[00007FF81DDDE858] Unknown function at CallWindowProcW + $3F8
[00007FF81DDDDE1B] Unknown function at SendMessageW + $86B
[00007FF81DDDD68A] SendMessageW + $DA
[00007FF800062467] Unknown function at ImageList_LoadImageW + $367
[00007FF8000720F0] Unknown function at ImageList_WriteEx + $9A0
[00007FF81DDDE858] Unknown function at CallWindowProcW + $3F8
[00007FF81DDDE4EE] CallWindowProcW + $8E
[0000000000802037] Vcl.Controls.TWinControl.DefaultHandler + $117
[00000000007FB9EF] Vcl.Controls.TControl.WMLButtonUp + $1F
[000000000040FEF5] System.TObject.Dispatch + $45
[00000000007FAC40] Vcl.Controls.TControl.WndProc + $370
[0000000000801EA0] Vcl.Controls.TWinControl.WndProc + $9A0
[000000000064C8B5] Vcl.StdCtrls.TButtonControl.WndProc + $95
[000000000080101C] Vcl.Controls.TWinControl.MainWndProc + $2C
[00000000005561B6] System.Classes.StdWndProc + $26
[00007FF81DDDE858] Unknown function at CallWindowProcW + $3F8
[00007FF81DDDE299] Unknown function at DispatchMessageW + $259
[00000000007B63B3] Vcl.Forms.TApplication.ProcessMessage + $133
[00000000007B6428] Vcl.Forms.TApplication.HandleMessage + $18
[00000000007AF4B4] Vcl.Forms.TCustomForm.ShowModal + $2B4
[0000000000C94E9C] uFindHex.ShowFindHex (Line 64, "uFindHex.pas" + 4) + $0
[0000000000D53798] uMain.TfPSPad.aReplaceExecute (Line 6643, "uMain.pas" + 2) + $7
[0000000000D6992D] uMain.TfPSPad.ActionListExecute (Line 12209, "uMain.pas" + 8) + $10
[000000000060BC77] System.Actions.TContainedActionList.ExecuteAction + $97
[0000000000610B68] Vcl.ActnList.TCustomAction.Execute + $A8
[0000000000554A36] System.Classes.TBasicActionLink.Execute + $26
[00000000007DADAA] Vcl.Menus.TMenuItem.Click + $CA
[00000000007DDD0D] Vcl.Menus.DoClick + $16D
[00000000007DDE32] Vcl.Menus.TMenu.IsShortCut + $92
[00000000007AFF05] Vcl.Forms.TCustomForm.IsShortCut + $65
[00000000007B6144] Vcl.Forms.TApplication.IsShortCut + $74
[00000000007B531A] Vcl.Forms.TApplication.WndProc + $60A
[00000000005561B6] System.Classes.StdWndProc + $26
[00007FF81DDDE858] Unknown function at CallWindowProcW + $3F8
[00007FF81DDDDE1B] Unknown function at SendMessageW + $86B
[00007FF81DDDD68A] SendMessageW + $DA
[00000000007F3184] Vcl.Controls.SendAppMessage + $34
[0000000000805B8A] Vcl.Controls.TWinControl.IsMenuKey + $AA
[0000000000805BDD] Vcl.Controls.TWinControl.CNKeyDown + $2D
[000000000040FEF5] System.TObject.Dispatch + $45
[00000000007FAC40] Vcl.Controls.TControl.WndProc + $370
[0000000000801EA0] Vcl.Controls.TWinControl.WndProc + $9A0
[000000000080101C] Vcl.Controls.TWinControl.MainWndProc + $2C
[00000000005561B6] System.Classes.StdWndProc + $26
[00007FF81DDDE858] Unknown function at CallWindowProcW + $3F8
[00007FF81DDDDE1B] Unknown function at SendMessageW + $86B
[00007FF81DDDD68A] SendMessageW + $DA
[00000000007B6010] Vcl.Forms.TApplication.IsKeyMsg + $B0
[00000000007B638B] Vcl.Forms.TApplication.ProcessMessage + $10B
[00000000007B6428] Vcl.Forms.TApplication.HandleMessage + $18
[00000000007B6876] Vcl.Forms.TApplication.Run + $E6
[0000000000D8E3BC] PSPad.PSPad (Line 121, "" + 56) + $0
[00007FF81CB47034] BaseThreadInitThunk + $14
[00007FF81E6E2651] RtlUserThreadStart + $21
----------------------------------------------------------------------------------------------------
Program : C:\Program Files\PSPad editor\PSPad.exe 5.0.6 (589)
System : Windows 10 Home Edition x64, Version: 10.0, Build: 4A63,
Processor: Intel, Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz, 2590 MHz MMX
Display : 1920x1080 pixels, 32 bpp PPI: 120
Skin : Windows
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Active Controls Hierarchy:
TButton "bOK"
TfFindHex "fFindHex"
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