Error on Editable Grid

Hello, I have problem with Editable Grid. When I am surfing through the records with mouse, everything works fine. But when I’m trying do that with my keyboard the software collapse . I noticed that this happened only when Grid in detail is in that Ex form (when there are two grids in detail).
Using 340 version.

Pic.1 Changing position with mouse

Pic. 2 Changing position with keyboard

Error message:

GENERAL INFORMATION
Date/Time: 2014.10.09 16:47:10
Computer Name: DENISPC
User Name: Denisas
Operational System: Windows 7 Professional, Build: 7601, 'Service Pack 1'
System Language: Lithuanian (Lithuania)
Processor: Intel, Intel(R) Core(TM) i3-2120 CPU @ 3.30GHz, MMX
Display: 1680x1050 pixels, 32 bpp
System Up Time: 0 day(s) 08:51:11.0019
Program Up Time: 0 day(s) 00:30:59.0064
Executable: C:\Terrasoft\TS340\Bin\TSClient.exe
Version: 3.4.0.163
Exception Class: EAccessViolation
Exception Message: Access violation at address 5034C8FC in module 'vcl150.bpl'. Read of address 006700A2

CALL STACK
Forms.IsAccel ()
Controls.TControl.WndProc ()
Controls.TWinControl.WndProc ()
TSCEdit.TSCEdit.TTSCCustomEdit.WndProc ()
TSCLayout.TSCLayout.TLayoutItem.ControlWndProc ()
Controls.TWinControl.MainWndProc ()
Classes.TDataModule.WriteHeight ()

ACTIVE CONTROLS
EditControl (TInternalTextDataControl)
tvMain (TTSCStringTree)
grdData (TfrmDataGrid)
(TInternalLayout)
(TInternalWindow)
wndMaster (TInternalWindowContainer)
fsMain (TInternalLayout)
(TInternalLayout)
(TInternalWindow)
wndMarketingAudienceDetail (TInternalWindowContainer)
fmMarketingAudienceDetail (TInternalLayout)
pgMarketingAudienceDetail (TInternalLayout)
(TInternalPage)
pcDetails (TInternalPages)
fmClient (TInternalLayout)
(TInternalLayout)
(TInternalWindow)
wndWorkspace (TInternalWindowContainer)
(TInternalLayout)
(TInternalWindow)

LOADED MODULES
C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\Cultures\office.odf (14.0.7109.5000)
C:\PROGRA~2\MICROS~4\Office14\1033\GrooveIntlResource.dll (14.0.6009.1000)
C:\PROGRA~2\MICROS~4\Office14\GROOVEEX.DLL (14.0.7113.5005)
C:\Program Files (x86)\Common Files\Microsoft Shared\VS7Debug\msdbg2.dll (9.0.30729.1)
C:\Program Files (x86)\Common Files\Microsoft Shared\VS7Debug\pdm.dll (10.0.20506.1)
C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live\WLIDNSP.DLL (7.250.4225.0)
C:\Terrasoft\TS340\Bin\adortl150.bpl (15.0.3953.35171)
C:\Terrasoft\TS340\Bin\dbrtl150.bpl (15.0.3953.35171)
C:\Terrasoft\TS340\Bin\iconv.dll (1.9.0.0)
C:\Terrasoft\TS340\Bin\libxml2.dll (No version info)
C:\Terrasoft\TS340\Bin\pcre.dll (6.7.0.0)
C:\Terrasoft\TS340\Bin\rtl150.bpl (15.0.3953.35171)
C:\Terrasoft\TS340\Bin\Terrasoft.bpl (3.4.0.163)
C:\Terrasoft\TS340\Bin\TSClient.exe (3.4.0.163)
C:\Terrasoft\TS340\Bin\TSComponents.bpl (3.4.0.163)
C:\Terrasoft\TS340\Bin\TSComponentsExtra.bpl (3.4.0.163)
C:\Terrasoft\TS340\Bin\TSCoreComponents.bpl (3.4.0.163)
C:\Terrasoft\TS340\Bin\TSDesktop.bpl (3.4.0.163)
C:\Terrasoft\TS340\Bin\TSMSSQLEngineLibrary.dll (3.4.0.163)
C:\Terrasoft\TS340\Bin\TSObject.bpl (3.4.0.163)
C:\Terrasoft\TS340\Bin\TSObjectLibrary.dll (3.4.0.163)
C:\Terrasoft\TS340\Bin\TSWindowLibrary.dll (3.4.0.163)
C:\Terrasoft\TS340\Bin\vcl150.bpl (15.0.3953.35171)
C:\Terrasoft\TS340\Bin\vcldb150.bpl (15.0.3953.35171)
C:\Terrasoft\TS340\Bin\vclimg150.bpl (15.0.3953.35171)
C:\Terrasoft\TS340\Bin\VclSmp150.bpl (15.0.3953.35171)
C:\Terrasoft\TS340\Bin\vclx150.bpl (15.0.3953.35171)
C:\Terrasoft\TS340\Bin\xmlrtl150.bpl (15.0.3953.35171)
C:\Terrasoft\TS340\Bin\zlib1.dll (1.2.2.0)
C:\Windows\AppPatch\AcLayers.DLL (6.1.7601.17974)
C:\Windows\system32\apphelp.dll (6.1.7601.17514)
C:\Windows\system32\bcrypt.dll (6.1.7600.16385)
C:\Windows\system32\BROWCLI.DLL (6.1.7601.17887)
C:\Windows\system32\credssp.dll (6.1.7601.18489)
C:\Windows\system32\cryptdll.dll (6.1.7600.16385)
C:\Windows\system32\CRYPTSP.dll (6.1.7600.16385)
C:\Windows\system32\cscapi.dll (6.1.7601.17514)
C:\Windows\system32\DNSAPI.dll (6.1.7601.17570)
C:\Windows\system32\DUI70.dll (6.1.7600.16385)
C:\Windows\system32\DUser.dll (6.1.7600.16385)
C:\Windows\system32\dwmapi.dll (6.1.7600.16385)
C:\Windows\system32\EhStorShell.dll (6.1.7600.16385)
C:\Windows\system32\explorerframe.dll (6.1.7601.17514)
C:\Windows\System32\fwpuclnt.dll (6.1.7601.18283)
C:\Windows\system32\HHCtrl.OCX (6.1.7600.16385)
C:\Windows\system32\IPHLPAPI.DLL (6.1.7601.17514)
C:\Windows\system32\LOGONCLI.DLL (6.1.7601.17514)
C:\Windows\system32\mpr.dll (6.1.7600.16385)
C:\Windows\system32\Msftedit.DLL (5.41.21.2510)
C:\Windows\system32\msimg32.dll (6.1.7600.16385)
C:\Windows\system32\mswsock.dll (6.1.7601.18254)
C:\Windows\System32\msxml6.dll (6.30.7601.18431)
C:\Windows\system32\ncrypt.dll (6.1.7601.18489)
C:\Windows\system32\netapi32.dll (6.1.7601.17887)
C:\Windows\system32\netutils.dll (6.1.7601.17514)
C:\Windows\system32\ntdsapi.dll (6.1.7600.16385)
C:\Windows\system32\ntmarta.dll (6.1.7600.16385)
C:\Windows\system32\ntshrui.dll (6.1.7601.17755)
C:\Windows\system32\oleacc.dll (7.0.0.0)
C:\Windows\system32\oledlg.dll (6.1.7600.16385)
C:\Windows\system32\olepro32.dll (6.1.7601.17514)
C:\Windows\system32\propsys.dll (7.0.7601.17514)
C:\Windows\system32\rasadhlp.dll (6.1.7600.16385)
C:\Windows\system32\RpcRtRemote.dll (6.1.7601.17514)
C:\Windows\system32\rsaenh.dll (6.1.7600.16385)
C:\Windows\system32\secur32.dll (6.1.7601.18526)
C:\Windows\system32\security.dll (6.1.7600.16385)
C:\Windows\system32\SHFolder.dll (6.1.7600.16385)
C:\Windows\system32\slc.dll (6.1.7600.16385)
C:\Windows\system32\srvcli.dll (6.1.7601.17514)
C:\Windows\system32\SXS.DLL (6.1.7601.17514)
C:\Windows\system32\uxtheme.dll (6.1.7600.16385)
C:\Windows\system32\version.dll (6.1.7600.16385)
C:\Windows\system32\wbem\fastprox.dll (6.1.7601.17514)
C:\Windows\system32\wbem\wbemdisp.dll (6.1.7600.16385)
C:\Windows\system32\wbem\wbemprox.dll (6.1.7600.16385)
C:\Windows\system32\wbem\wbemsvc.dll (6.1.7600.16385)
C:\Windows\system32\wbem\wmiutils.dll (6.1.7600.16385)
C:\Windows\system32\wbemcomn.dll (6.1.7601.17514)
C:\Windows\system32\WindowsCodecs.dll (6.2.9200.16809)
C:\Windows\system32\winmm.dll (6.1.7601.17514)
C:\Windows\system32\WINNSI.DLL (6.1.7600.16385)
C:\Windows\system32\winspool.drv (6.1.7601.17514)
C:\Windows\system32\WINSTA.dll (6.1.7601.17514)
C:\Windows\system32\wkscli.dll (6.1.7601.17514)
C:\Windows\System32\wship6.dll (6.1.7600.16385)
C:\Windows\System32\wshtcpip.dll (6.1.7600.16385)
C:\Windows\system32\wsock32.dll (6.1.7600.16385)
C:\Windows\SysWOW64\1033\SQLNCLIR10.RLL (2007.100.1600.22)
C:\Windows\syswow64\ADVAPI32.dll (6.1.7601.18247)
C:\Windows\SysWOW64\bcryptprimitives.dll (6.1.7600.16385)
C:\Windows\syswow64\CFGMGR32.dll (6.1.7601.17621)
C:\Windows\syswow64\CLBCatQ.DLL (2001.12.8530.16385)
C:\Windows\syswow64\comdlg32.dll (6.1.7601.17514)
C:\Windows\syswow64\CRYPT32.dll (6.1.7601.18277)
C:\Windows\syswow64\CRYPTBASE.dll (6.1.7600.16385)
C:\Windows\syswow64\dbghelp.dll (6.1.7601.17514)
C:\Windows\syswow64\DEVOBJ.dll (6.1.7601.17621)
C:\Windows\syswow64\GDI32.dll (6.1.7601.18577)
C:\Windows\syswow64\IMAGEHLP.DLL (6.1.7601.18288)
C:\Windows\syswow64\imm32.dll (6.1.7601.17514)
C:\Windows\SysWow64\jscript.dll (5.8.9600.16428)
C:\Windows\SysWOW64\Kerberos.DLL (6.1.7601.18526)
C:\Windows\syswow64\kernel32.dll (6.1.7601.18409)
C:\Windows\syswow64\KERNELBASE.dll (6.1.7601.18409)
C:\Windows\syswow64\LPK.dll (6.1.7601.18177)
C:\Windows\syswow64\MSASN1.dll (6.1.7601.17514)
C:\Windows\syswow64\MSCTF.dll (6.1.7600.16385)
C:\Windows\SysWOW64\msscript.ocx (1.0.7600.16385)
C:\Windows\SysWOW64\msv1_0.DLL (6.1.7601.18489)
C:\Windows\syswow64\msvcrt.dll (7.0.7601.17744)
C:\Windows\syswow64\NSI.dll (6.1.7600.16385)
C:\Windows\SysWOW64\ntdll.dll (6.1.7601.18247)
C:\Windows\syswow64\ole32.dll (6.1.7601.17514)
C:\Windows\syswow64\oleaut32.dll (6.1.7601.17676)
C:\Windows\syswow64\profapi.dll (6.1.7600.16385)
C:\Windows\syswow64\PSAPI.DLL (6.1.7600.16385)
C:\Windows\syswow64\RPCRT4.dll (6.1.7601.18532)
C:\Windows\SysWOW64\schannel.dll (6.1.7601.18489)
C:\Windows\SysWOW64\scrrun.dll (5.8.7601.18283)
C:\Windows\SysWOW64\sechost.dll (6.1.7600.16385)
C:\Windows\syswow64\SETUPAPI.dll (6.1.7601.17514)
C:\Windows\syswow64\SHELL32.dll (6.1.7601.18517)
C:\Windows\syswow64\SHLWAPI.dll (6.1.7601.17514)
C:\Windows\SysWOW64\sqlncli10.dll (2007.100.5500.0)
C:\Windows\syswow64\SspiCli.dll (6.1.7601.18526)
C:\Windows\syswow64\USER32.dll (6.1.7601.17514)
C:\Windows\syswow64\USERENV.dll (6.1.7601.17514)
C:\Windows\syswow64\USP10.dll (1.626.7601.18454)
C:\Windows\syswow64\WLDAP32.dll (6.1.7601.17514)
C:\Windows\syswow64\WS2_32.dll (6.1.7601.17514)
C:\Windows\WinSxS\x86_microsoft.vc80.crt_1fc8b3b9a1e18e3b_8.0.50727.6195_none_d09154e044272b9a\MSVCR80.dll (8.0.50727.6195)
C:\Windows\WinSxS\x86_microsoft.vc90.atl_1fc8b3b9a1e18e3b_9.0.30729.6161_none_51cd0a7abbe4e19b\ATL90.DLL (9.0.30729.6161)
C:\Windows\WinSxS\x86_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.6161_none_50934f2ebcb7eb57\MSVCP90.dll (9.0.30729.6161)
C:\Windows\WinSxS\x86_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.6161_none_50934f2ebcb7eb57\MSVCR90.dll (9.0.30729.6161)
C:\Windows\WinSxS\x86_microsoft.windows.common-controls_6595b64144ccf1df_5.82.7601.18201_none_ec80f00e8593ece5\comctl32.dll (5.82.7601.18201)
C:\Windows\WinSxS\x86_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7601.17514_none_41e6975e2bd6f2b2\comctl32.dll (6.10.7601.17514)