Automation Error for Single Threaded ActiveX on Windows 7

Hi All,
I have an old activex control embedded to SAP GUI (using CL_GUI_CONTROL) running without problem for years on Windows XP.
When I try to run this control using the same SAP GUI version and patch level on Windows 7, the SAP GUI is not responding/crash.
After deep investigation, I find that every activex with threading model - single threaded, failed to run on SAP GUI on Windows 7. While this single threaded control run without problem on Windows XP.
I have tried to upgrade the SAP GUI to the latest version & patch (720 patch level 8), the same result occures. The control successfully embedded to SAP GUI 720 on Windows XP, but not on Windows 7.
I also have verified the single threaded control can run on Windows 7 without problem by embedding the control to other software like Ms. Exce or Ms. IE, and run it successfully on Windows 7.
Does any one experienced in this issue? or can anyone try to create a simple activex control with single threaded and run it successfully from SAP GUI on Windows 7?
Below is a sample of ABAP program that I use to embedded the activeX control, and the SAP GUI trace log.
If needed I can send you the sample activex control (how to attach files?) and step by step to reproduce the error.
Please advice, is this an SAP GUI issue?
Thank you.
Edited by: Sastra Rudy on Sep 28, 2011 1:02 PM

data to server ***************
data from server ***************
<23=Automation: lifetime management, set new IMode 202 (old = 101), CMyAutomationClient=0x057BCAF0
<23=Automation: SAPAWRFC entering FLUSH with RFC_HANDLE 6
<23=Automation: CALL METHOD "CreateObject"
                    #0: STRING "{83658045-6571-3232-7082-797884697868}"
                    #1: LONG "1033"
<23=Automation: Result: OBJECT [#8/0x05AC9558/202/SAPGUI.APPLICATION] ([#handle/IDispatch/imode/created])
<23=Automation: CALL METHOD "CreateControl" OF [#8/0x05AC9558/202/SAPGUI.APPLICATION]
                    #0: LONG "119" // ShellID !119
                    #1: STRING "SAPGUI.CONTAINERCTRL.1"
                    #2: LONG "1342177280"
                    #3: LONG "10" // ShellID !10
<23=Automation: Result: OBJECT [#10/0x058840D8/202/SAPGUI.CONTAINERCTRL.1] ([#handle/IDispatch/imode/created])
<23=Automation: CALL METHOD "SetProperty" OF [#8/0x05AC9558/202/SAPGUI.APPLICATION]
                    #0: LONG "119" !119 = OBJECT [#10/0x058840D8/202/SAPGUI.CONTAINERCTRL.1]
                    #1: LONG "240"
                    #2: LONG "0"
<23=Automation: CALL METHOD "LinkContainer" OF [#8/0x05AC9558/202/SAPGUI.APPLICATION]
                    #0: LONG "119" !119 = OBJECT [#10/0x058840D8/202/SAPGUI.CONTAINERCTRL.1]
                    #1: STRING "CCONTROL1"
<23=Automation: CALL METHOD "SetProperty" OF [#8/0x05AC9558/202/SAPGUI.APPLICATION]
                    #0: LONG "119" !119 = OBJECT [#10/0x058840D8/202/SAPGUI.CONTAINERCTRL.1]
                    #1: LONG "290"
                    #2: STRING "1"
<23=Automation: CALL METHOD "SetProperty" OF [#8/0x05AC9558/202/SAPGUI.APPLICATION]
                    #0: LONG "119" !119 = OBJECT [#10/0x058840D8/202/SAPGUI.CONTAINERCTRL.1]
                    #1: LONG "520"
                    #2: STRING "CCONTROL1"
<23=Automation: CALL METHOD "RegisterCachedProp" OF [#8/0x05AC9558/202/SAPGUI.APPLICATION]
                    #0: LONG "119" !119 = OBJECT [#10/0x058840D8/202/SAPGUI.CONTAINERCTRL.1]
                    #1: STRING "120"
<23=Automation: CALL METHOD "RegisterCachedProp" OF [#8/0x05AC9558/202/SAPGUI.APPLICATION]
                    #0: LONG "119" !119 = OBJECT [#10/0x058840D8/202/SAPGUI.CONTAINERCTRL.1]
                    #1: STRING "300"
<23=Automation: CALL METHOD "CreateControl" OF [#8/0x05AC9558/202/SAPGUI.APPLICATION]
                    #0: LONG "120" // ShellID !120
                    #1: STRING "PSingle.Single"
                    #2: LONG "1409286144"
                    #3: LONG "119" !119 = OBJECT [#10/0x058840D8/202/SAPGUI.CONTAINERCTRL.1]
<23=Automation(Error): CALL METHOD "CreateControl"[DispID=5] OF [#8/0x05AC9558/202/SAPGUI.APPLICATION]
                    #0: LONG "120" // ShellID !120
                    #1: STRING "PSingle.Single"
                    #2: LONG "1409286144"
                    #3: LONG "119" !119 = OBJECT [#10/0x058840D8/202/SAPGUI.CONTAINERCTRL.1]
IDispatch::Invoke raised exception
<23=Automation(Error): CALL METHOD "CreateControl"[DispID=5] OF [#8/0x05AC9558/202/SAPGUI.APPLICATION]
                    #0: LONG "120" // ShellID !120
                    #1: STRING "PSingle.Single"
                    #2: LONG "1409286144"
                    #3: LONG "119" !119 = OBJECT [#10/0x058840D8/202/SAPGUI.CONTAINERCTRL.1]
IDispatch::Invoke raised exception
<23=Automation: Result: STRING ""
<23=Automation: SAPAWRFC: fatal error in CSapAuto::CallMethod, an exception occured

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