Code Firmware Updater


I am running Windows 10 on a compatible laptop and get an error message when I try to run the Marshall update utility software. It occurs after a "verifying application requirements" window pops up. The error starts with "An unexpected error just occurred. Cannot create instance of main window"?

Any advice?



asked 29 Jun 2016 at 07:44 AM

Steve Sweeney (6)
I am experiencing this same issue. - Randall Clark 12 Aug 2016 at 09:07 PM
Answers: 8



We are sorry you are experiencing problems, please try the following


  • Start Windows Control Panel.
  • Select the 'Uninstall a program' option from the 'Programs' category. (You can search for 'uninstall' in the Control Panel search box if it is not displayed.)
  • Find the entry for 'Marshall Firmware Update Utility' in the list, click on it and then click on the 'Uninstall' option.  Click on the 'OK' button when prompted to remove the application.
  • Log in to your account on the My Marshall website.
  • Go to the 'Downloads' page.
  • Click on the 'Download' button.  You may be prompted to save the 'Setup.exe' file locally, in which case confirm this, along with the location if required.  The file location doesn't matter, so it could just be your Downloads folder.
  • Click on the downloaded 'Setup.exe' in the browser, or navigate to the local folder that it was saved to, and double click the icon.
  • Confirm installation of the application.
  • After a short time installing the necessary files, the application should start

answered 15 Aug 2016 at 08:22 AM

Still experiencing same problems as OP after installation on a Windows 10 computer. Uninstall and install afterwards does not solve this issue - Nils Kleinohl 17 Aug 2016 at 08:35 AM


I also have the same issue, theoretically the ap installs but upon running it the same error message as the OP. If there is no timeline for it to be fixed then is possible to just get the actual firmware update itself or will it need the app to install on the amp?

answered 10 Aug 2016 at 12:16 PM

Keiren Whitelock (4)


I am experiencing the same issue.  Is the firmware update something critical to use?  It appears not everyone is experiencing this issue, so is it a Windows 10 thing?



answered 13 Aug 2016 at 09:37 PM

Randall Clark (3)



answered 31 Jul 2016 at 12:10 AM

felix rivera (2)
Hi Felix,
You can find the manual following this link, simply click which Code model you have and you can find it there
- Marshall 10 Aug 2016 at 12:26 PM


An unexpected error just occurred:
Ongeldige query


Windows version: Microsoft Windows NT 6.1.7601 Service Pack 1,

Startup at 10-9-2016 15:32:22
Getting service URL...
Service URL =
Attaching USB Notifier...
Getting VendorId List...
VendorId List = 10760
Creating Firmware Updates List...
Adding Firmware Updates List Changed Handler...
Creating new Midi Device...
Adding DeviceInfoReceived Handler...
Adding BluetoothInformationReceived Handler...
Adding MidiInfoReceived Handler...
Adding FirmwareUpdateProgress Handler...
Adding Metadata Event Handler...
Adding Restart Event Handler...
Checking device status...
Getting USB Device List...

Stack Trace:
bij System.Management.ManagementException.ThrowWithExtendedInfo(ManagementStatus errorCode)
bij System.Management.ManagementObjectCollection.ManagementObjectEnumerator.MoveNext()
bij MarshallFirmwareUpdateUtility.Helpers.UsbDeviceHelpers.GetUsbDeviceList() in C:\Development\TFS\Marshall SAT\SAT\MarshallFirmwareUpdateUtility\Helpers\UsbDeviceHelpers.cs:regel 30
bij MarshallFirmwareUpdateUtility.ViewModel.MainViewModel.CheckInitialDeviceStatus() in C:\Development\TFS\Marshall SAT\SAT\MarshallFirmwareUpdateUtility\ViewModel\MainViewModel.cs:regel 1382
bij MarshallFirmwareUpdateUtility.ViewModel.MainViewModel..ctor() in C:\Development\TFS\Marshall SAT\SAT\MarshallFirmwareUpdateUtility\ViewModel\MainViewModel.cs:regel 123

edited 10 Sep 2016 at 01:35 PM

john bolier (37)

answered 10 Sep 2016 at 01:31 PM

john bolier (37)
Hi John,

We have just uploaded another new version of the firmware dater. Could you please try running the application again and send us any error log generated

Thank you
- Marshall 13 Sep 2016 at 11:06 AM
seems to work correctly now... will updating the firmware result in losing saved presets? - john bolier 14 Sep 2016 at 09:06 PM
updating the firmware should not have any affect on saved presets. - Marshall 15 Sep 2016 at 08:02 AM


Hi Steve, 

We have passed this on to our team to investigate, and hope to have this fixed soon.

answered 13 Jul 2016 at 06:54 PM

Chris Robinson (338)


When I download setup.exe and start it comes back with the following:

An error occurred trying to download ''.
See the setup log file located at 'C:\Users\<yourname>\AppData\Local\Temp\VSDC08F.tmp\install.log' for more information.

yourname = your username,      .tmp file has a different name on every install attempt.

when you open the log and copy the URL address from the bottom and paste directly into the web browser  it will download the utility directly. install runs perfect after that.

I am using windows 10 , this might be the problem



answered 26 Nov 2016 at 09:51 AM

R van Zutphen (1)


Same to me  on Win 7

After starting the Setup.exe i get this :

An unexpected error just occurred:

Der Konfigurationsabschnitt "connectionStrings" weist eine unerwartete Deklaration auf.


Windows version: Microsoft Windows NT 6.1.7601 Service Pack 1,


Startup at 06.12.2016 09:37:10


Getting service URL...

 Stack Trace:

   bei System.Configuration.ConfigurationManager.get_ConnectionStrings()

   bei System.Configuration.PrivilegedConfigurationManager.get_ConnectionStrings()

   bei System.Configuration.LocalFileSettingsProvider.GetPropertyValues(SettingsContext context, SettingsPropertyCollection properties)

   bei System.Configuration.SettingsBase.GetPropertiesFromProvider(SettingsProvider provider)

   bei System.Configuration.SettingsBase.GetPropertyValueByName(String propertyName)

   bei System.Configuration.SettingsBase.get_Item(String propertyName)

   bei System.Configuration.ApplicationSettingsBase.GetPropertyValue(String propertyName)

   bei System.Configuration.ApplicationSettingsBase.get_Item(String propertyName)

   bei MarshallFirmwareUpdateUtility.Properties.Settings.get_GatewayWebserviceUrl() in C:\Development\TFS\Marshall SAT\SAT\MarshallFirmwareUpdateUtility\Properties\Settings.Designer.cs:Zeile 40.

   bei MarshallFirmwareUpdateUtility.ViewModel.MainViewModel..ctor() in C:\Development\TFS\Marshall SAT\SAT\MarshallFirmwareUpdateUtility\ViewModel\MainViewModel.cs:Zeile 93.



I read all  the Tips here , but cant install it :-(

edited 06 Dec 2016 at 08:54 AM

Bjoern Carstens

answered 06 Dec 2016 at 08:43 AM

Bjoern Carstens
Hello Bjoern,
the error message looks like an issue with the connection strings section of your local machine.config file
Our tech department have taken a look and hopefully sorted the issue for you, could you please run the update utility again and let me know if it works OK for you?
- Marshall 07 Dec 2016 at 10:59 AM
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