Hi Andreas - 

Apologies for the late response. Our forum was recently migrated to a new platform and email notifications were not enabled. Are you still having an issue?

Tyler

- The same problem here with Windows 10 v1803 and image assist 8.5.0.6 as well as 8.4.0.9. - Hyper-V Manager on Windows 10

- There was no problem at all with Windows 10 v1703 and image assist 8.0.0.8. we managed to install all apps/programs we needed for user, captured image and deployed on 50+ dell machines.

- Did one more test. Tried to capture image on fresh installed windows on virtual machine. With no programs installed I received exactly the same error message:

Please let us know about solutions for this issue as it is taking too much time to test and every time receive a failure.

Here is the error message I receive:

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
at Auto_Capture_Prep_Tool.Form1.WIMBootCheck()
at Auto_Capture_Prep_Tool.Form1.Form1_Activated(Object sender, EventArgs e)
at System.Windows.Forms.Form.OnActivated(EventArgs e)
at System.Windows.Forms.Form.set_Active(Boolean value)
at System.Windows.Forms.Form.WmActivate(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: 4.7.3056.0 built by: NET472REL1
CodeBase: file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/mscorlib.dll
----------------------------------------
Auto_Capture_Prep_Tool
Assembly Version: 5.6.0.4
Win32 Version: 5.6.0.4
CodeBase: file:///C:/Program%20Files/Dell/ImageAssist/Auto_Capture_Prep_Tool.exe
----------------------------------------
System
Assembly Version: 4.0.0.0
Win32 Version: 4.7.3056.0 built by: NET472REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
DIA.Common
Assembly Version: 8.5.0.6
Win32 Version: 8.5.0.6
CodeBase: file:///C:/Program%20Files/Dell/ImageAssist/DIA.Common.DLL
----------------------------------------
System.Core
Assembly Version: 4.0.0.0
Win32 Version: 4.7.3056.0 built by: NET472REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Core/v4.0_4.0.0.0__b77a5c561934e089/System.Core.dll
----------------------------------------
System.Windows.Forms
Assembly Version: 4.0.0.0
Win32 Version: 4.7.3056.0 built by: NET472REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System.Drawing
Assembly Version: 4.0.0.0
Win32 Version: 4.7.3056.0 built by: NET472REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System.Xml
Assembly Version: 4.0.0.0
Win32 Version: 4.7.3056.0 built by: NET472REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
System.Xml.Linq
Assembly Version: 4.0.0.0
Win32 Version: 4.7.3056.0 built by: NET472REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Xml.Linq/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.Linq.dll
----------------------------------------
System.Configuration
Assembly Version: 4.0.0.0
Win32 Version: 4.7.3056.0 built by: NET472REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.Management
Assembly Version: 4.0.0.0
Win32 Version: 4.7.3056.0 built by: NET472REL1
CodeBase: file:///C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Management/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Management.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:

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.

Thank you in advance for your help!

MiroDole -

Will you please zip and email (referencing this forum post) the following log files from a failing system to US_OSImaging@Dell.com.

c:\windows\panther\dtri\logs

Thank you,

Tyler

Hi there!

Any news on this issue? I already tried all the Appx Stuff, but as this error is arriving prior I assume that this is another issue.

Regards, David

Hi @DELL-Tyler M: I have the same issue.

My versions: Windows 10 Pro 1803

Dell ImageAssist 8.5.0.6

Once ImageAssist selection are done, it runs through Validation Checker without errors and then when trying to launch the Auto Capture Prep Tool ,the error occurs. I can click on Continue and it continues correctly.