Error in QSO
I can tell from the >>>> replied to: that he is sending something, but I can't see it.

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
System.InvalidOperationException: FirstDisplayedScrollingRowIndex property cannot be set to an invisible row.
at System.Windows.Forms.DataGridView.set_FirstDisplayedScrollingRowIndex(Int32 value)
at VarAC.VarAC.button_datastream_scroll_down_Click(Object sender, EventArgs e)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
************** Loaded Assemblies **************
mscorlib
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9325.0 built by: NET481REL1LAST_25H2_C
CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/mscorlib.dll
----------------------------------------
VarAC
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0
CodeBase: file:///C:/VarAC/VarAC.exe
----------------------------------------
System.Windows.Forms
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9325.0 built by: NET481REL1LAST_25H2_C
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9333.0 built by: NET481REL1LAST_25H2_B
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Drawing
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9221.0 built by: NET481REL1LAST_25H2
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System.Core
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9335.0 built by: NET481REL1LAST_25H2_B
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Core/v4.0_4.0.0.0__b77a5c561934e089/System.Core.dll
----------------------------------------
System.Configuration
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9221.0 built by: NET481REL1LAST_25H2
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.Xml
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9221.0 built by: NET481REL1LAST_25H2
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
Accessibility
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9221.0 built by: NET481REL1LAST_25H2
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/Accessibility/v4.0_4.0.0.0__b03f5f7f11d50a3a/Accessibility.dll
----------------------------------------
WindowsFormsIntegration
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9221.0 built by: NET481REL1LAST_25H2
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/WindowsFormsIntegration/v4.0_4.0.0.0__31bf3856ad364e35/WindowsFormsIntegration.dll
----------------------------------------
PresentationFramework
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9335.0
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/PresentationFramework/v4.0_4.0.0.0__31bf3856ad364e35/PresentationFramework.dll
----------------------------------------
WindowsBase
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9335.0 built by: NET481REL1LAST_25H2_B
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/WindowsBase/v4.0_4.0.0.0__31bf3856ad364e35/WindowsBase.dll
----------------------------------------
PresentationCore
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9335.0 built by: NET481REL1LAST_25H2_B
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_32/PresentationCore/v4.0_4.0.0.0__31bf3856ad364e35/PresentationCore.dll
----------------------------------------
System.Xaml
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9335.0 built by: NET481REL1LAST_25H2_B
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Xaml/v4.0_4.0.0.0__b77a5c561934e089/System.Xaml.dll
----------------------------------------
PresentationFramework.Aero2
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9221.0 built by: NET481REL1LAST_25H2
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/PresentationFramework.Aero2/v4.0_4.0.0.0__31bf3856ad364e35/PresentationFramework.Aero2.dll
----------------------------------------
CookComputing.XmlRpcV2
Assembly Version: 3.0.0.0
Win32 Version: 1.0.0.0
CodeBase: file:///C:/VarAC/VarAC.exe
----------------------------------------
System.Data.SQLite
Assembly Version: 1.0.116.0
Win32 Version: 1.0.0.0
CodeBase: file:///C:/VarAC/VarAC.exe
----------------------------------------
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9221.0 built by: NET481REL1LAST_25H2
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_32/System.Data/v4.0_4.0.0.0__b77a5c561934e089/System.Data.dll
----------------------------------------
System.Transactions
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9221.0 built by: NET481REL1LAST_25H2
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_32/System.Transactions/v4.0_4.0.0.0__b77a5c561934e089/System.Transactions.dll
----------------------------------------
System.EnterpriseServices
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9221.0 built by: NET481REL1LAST_25H2
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_32/System.EnterpriseServices/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.EnterpriseServices.dll
----------------------------------------
MailKit
Assembly Version: 4.12.0.0
Win32 Version: 1.0.0.0
CodeBase: file:///C:/VarAC/VarAC.exe
----------------------------------------
MimeKit
Assembly Version: 4.12.0.0
Win32 Version: 1.0.0.0
CodeBase: file:///C:/VarAC/VarAC.exe
----------------------------------------
System.Buffers
Assembly Version: 4.0.4.0
Win32 Version: 1.0.0.0
CodeBase: file:///C:/VarAC/VarAC.exe
----------------------------------------
System.Numerics
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9221.0 built by: NET481REL1LAST_25H2
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Numerics/v4.0_4.0.0.0__b77a5c561934e089/System.Numerics.dll
----------------------------------------
System.Threading.Tasks.Extensions
Assembly Version: 4.2.1.0
Win32 Version: 1.0.0.0
CodeBase: file:///C:/VarAC/VarAC.exe
----------------------------------------
System.Memory
Assembly Version: 4.0.2.0
Win32 Version: 1.0.0.0
CodeBase: file:///C:/VarAC/VarAC.exe
----------------------------------------
System.Runtime.CompilerServices.Unsafe
Assembly Version: 6.0.1.0
Win32 Version: 1.0.0.0
CodeBase: file:///C:/VarAC/VarAC.exe
----------------------------------------
UIAutomationProvider
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9335.0 built by: NET481REL1LAST_25H2_B
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/UIAutomationProvider/v4.0_4.0.0.0__31bf3856ad364e35/UIAutomationProvider.dll
----------------------------------------
UIAutomationTypes
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9335.0 built by: NET481REL1LAST_25H2_B
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/UIAutomationTypes/v4.0_4.0.0.0__31bf3856ad364e35/UIAutomationTypes.dll
----------------------------------------
Windows.UI
Assembly Version: 255.255.255.255
Win32 Version: 10.0.26100.8737
CodeBase: file:///C:/WINDOWS/SysNative/WinMetadata/Windows.UI.winmd
----------------------------------------
Assembly Version: 255.255.255.255
Win32 Version: 10.0.26100.8737
CodeBase: file:///C:/WINDOWS/SysNative/WinMetadata/Windows.Foundation.winmd
----------------------------------------
System.Runtime.InteropServices.WindowsRuntime
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9221.0
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Runtime.InteropServices.WindowsRuntime/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Runtime.InteropServices.WindowsRuntime.dll
----------------------------------------
System.Runtime.WindowsRuntime
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9221.0 built by: NET481REL1LAST_25H2
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Runtime.WindowsRuntime/v4.0_4.0.0.0__b77a5c561934e089/System.Runtime.WindowsRuntime.dll
----------------------------------------
System.Speech
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9221.0 built by: NET481REL1LAST_25H2
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Speech/v4.0_4.0.0.0__31bf3856ad364e35/System.Speech.dll
----------------------------------------
System.Windows.Forms.DataVisualization
Assembly Version: 4.0.0.0
Win32 Version: 4.8.9221.0
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms.DataVisualization/v4.0_4.0.0.0__31bf3856ad364e35/System.Windows.Forms.DataVisualization.dll
----------------------------------------
************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.
For example:
<configuration>
<system.windows.forms jitDebugging="true" />
</configuration>
When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.


Sorry for the late reply. Its a known issue that is fixed in the next verion. Comming soon.