All of a sudden our licensing deactivated (this is a different establishment to my previous SambaPOS post issues) and when we try to activate it we get this error. Updating SambaPOS to the newest system is what crashed our other establishments till so was hoping there was a way around this or if this was a completely separate issue.
[General Info]
Application: SambaPOS
Version: 5.3.4
Region: en
DB: SQ
Machine: RBSERVER
User: simon
Date: 16/06/2026
Time: 16:13
User Explanation:
simon said “”
[Exception Info 1]
Top-level Exception
Type: System.ArgumentException
Message: Invalid JSON primitive: .
Source: System.Web.Extensions
Stack Trace: at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializePrimitiveObject()
at System.Web.Script.Serialization.JavaScriptObjectDeserializer.DeserializeInternal(Int32 depth)
at System.Web.Script.Serialization.JavaScriptObjectDeserializer.BasicDeserialize(String input, Int32 depthLimit, JavaScriptSerializer serializer)
at System.Web.Script.Serialization.JavaScriptSerializer.Deserialize(JavaScriptSerializer serializer, String input, Type type, Int32 depthLimit)
at Samba.Presentation.ClientLibrary.Modules.MarketModule.WebApiHelpers.Deserialize(String json) in C:\Users\Vehbi\Documents\Source\Repos\sambapos-v5-pro\Samba.Presentation.ClientLibrary\Modules\MarketModule\WebApiHelpers.cs:line 54
at Samba.Presentation.ClientLibrary.Modules.MarketModule.WebApiHelpers.GetAuthData(String host, String username, String password, String machineid) in C:\Users\Vehbi\Documents\Source\Repos\sambapos-v5-pro\Samba.Presentation.ClientLibrary\Modules\MarketModule\WebApiHelpers.cs:line 45
at Samba.Presentation.ClientLibrary.Modules.MarketModule.MarketModuleViewModel.Authenticate(String host, String userName, String password) in C:\Users\Vehbi\Documents\Source\Repos\sambapos-v5-pro\Samba.Presentation.ClientLibrary\Modules\MarketModule\MarketModuleViewModel.cs:line 266
at Samba.Presentation.ClientLibrary.Modules.MarketModule.MarketModuleViewModel.OnUserLogin(String obj) in C:\Users\Vehbi\Documents\Source\Repos\sambapos-v5-pro\Samba.Presentation.ClientLibrary\Modules\MarketModule\MarketModuleViewModel.cs:line 232
at Samba.Presentation.ClientLibrary.Modules.MarketModule.MarketModuleViewModel.addonInstallerViewModel_ModuleActivated(Object sender, EventArgs e) in C:\Users\Vehbi\Documents\Source\Repos\sambapos-v5-pro\Samba.Presentation.ClientLibrary\Modules\MarketModule\MarketModuleViewModel.cs:line 164
at Samba.Presentation.ClientLibrary.Modules.MarketModule.AddonInstallerViewModel.OnModuleActivated() in C:\Users\Vehbi\Documents\Source\Repos\sambapos-v5-pro\Samba.Presentation.ClientLibrary\Modules\MarketModule\AddonInstallerViewModel.cs:line 42
at Samba.Presentation.ClientLibrary.Modules.MarketModule.AddonInstallerViewModel.OnActivateModule(String obj) in C:\Users\Vehbi\Documents\Source\Repos\sambapos-v5-pro\Samba.Presentation.ClientLibrary\Modules\MarketModule\AddonInstallerViewModel.cs:line 112
at Microsoft.Practices.Prism.Commands.DelegateCommand`1.<>c__DisplayClass6.<.ctor>b__2(Object o)
at Microsoft.Practices.Prism.Commands.DelegateCommandBase.Execute(Object parameter)
at Microsoft.Practices.Prism.Commands.DelegateCommandBase.System.Windows.Input.ICommand.Execute(Object parameter)
at MS.Internal.Commands.CommandHelpers.CriticalExecuteCommandSource(ICommandSource commandSource, Boolean userInitiated)
at System.Windows.Controls.Primitives.ButtonBase.OnClick()
at System.Windows.Controls.Button.OnClick()
at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)
at System.Windows.UIElement.OnMouseLeftButtonUpThunk(Object sender, MouseButtonEventArgs e)
at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
at System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)
at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
at System.Windows.Input.InputManager.ProcessStagingArea()
at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
[Assembly Info]
mscorlib, Version=4.0.0.0
System, Version=4.0.0.0
Samba.Services, Version=5.3.7758.18495
Samba.Domain, Version=5.3.7758.18494
Samba.Infrastructure.Data, Version=5.3.7758.18494
System.ComponentModel.Composition, Version=4.0.0.0
Samba.Presentation.Services, Version=5.3.7758.18497
System.Core, Version=4.0.0.0
PresentationCore, Version=4.0.0.0
WindowsBase, Version=4.0.0.0
PresentationFramework, Version=4.0.0.0
DevExpress.Xpf.LayoutControl.v17.2, Version=17.2.13.0
System.Xml, Version=4.0.0.0
DevExpress.Xpf.Grid.v17.2, Version=17.2.13.0
DevExpress.Xpf.Grid.v17.2.Core, Version=17.2.13.0
System.Xaml, Version=4.0.0.0
Samba.Infrastructure, Version=5.3.7758.18490
Microsoft.Practices.Prism, Version=4.0.0.0
System.Runtime.Serialization, Version=4.0.0.0
Microsoft.Practices.Prism.MefExtensions, Version=4.0.0.0
DevExpress.Xpf.Core.v17.2, Version=17.2.13.0
System.Windows.Forms, Version=4.0.0.0
System.Drawing, Version=4.0.0.0
Samba.Persistance, Version=5.3.7758.18494
Stateless, Version=1.0.0.0
PropertyTools, Version=2012.4.14.1
Samba.Localization, Version=5.3.7758.18491
ReachFramework, Version=4.0.0.0
EntityFramework, Version=6.0.0.0
FluentValidation, Version=3.4.0.0
NCalc, Version=1.3.8.0
Microsoft.CSharp, Version=4.0.0.0
Omu.ValueInjecter, Version=2.3.0.0
Microsoft.Practices.ServiceLocation, Version=1.0.0.0
DevExpress.Data.v17.2, Version=17.2.13.0
WindowsInput, Version=1.0.4.0
[System Info]
Operating System
-Microsoft Windows 10 Home
–CodeSet = 1252
–CSDVersion =
–CurrentTimeZone = 60
–FreePhysicalMemory = 2329320
–OSArchitecture = 64-bit
–OSLanguage = 1033
–ServicePackMajorVersion = 0
–ServicePackMinorVersion = 0
–Version = 10.0.19045
Machine
-RBSERVER
–Manufacturer = LENOVO
–Model = F0BY00G2UK
–TotalPhysicalMemory = 8491335680
–UserName = RBSERVER\simon
