The program crashes whenever I try and use the POS section
can u explain more or post the error msg ?
Would expect you have made an automation which is bad and is triggering straight away.
Try the rule debugger to see if you can catch which rule it is.
You need to post the error message from the details tab of the error dialog.
If you are not getting an error dialog, find the log file here:
C:\Users\[username]\Documents\SambaPOS5\log.txt
Copy/paste the contents of that file into the forum, or attach the log to your post.
[General Info]
Application: SambaPOS
Version: 4.1.82
Region: en
DB: SQ
Machine: DELL-PC
User: DELL
Date: 11/11/2015
Time: 2:45 PM
User Explanation:
DELL said “”
[Exception Info 1]
Top-level Exception
Type: System.Reflection.TargetInvocationException
Message: Exception has been thrown by the target of an invocation.
Source: mscorlib
Stack Trace: at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
at System.Delegate.DynamicInvokeImpl(Object[] args)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.DispatcherOperation.InvokeImpl()
at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Windows.Threading.DispatcherOperation.Invoke()
at System.Windows.Threading.Dispatcher.ProcessQueue()
at System.Windows.Threading.Dispatcher.WndProcHook(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 MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
at System.Windows.Threading.Dispatcher.Run()
at System.Windows.Application.RunDispatcher(Object ignore)
at System.Windows.Application.RunInternal(Window window)
at System.Windows.Application.Run(Window window)
at Samba.Presentation.App.Main()
Inner Exception 1
Type: System.NullReferenceException
Message: Object reference not set to an instance of an object.
Source: Samba.Presentation.Services
Stack Trace: at Samba.Presentation.Services.Implementations.TicketModule.TicketService.GetExchangeRate(Account account)
at Samba.Presentation.Services.Implementations.TicketModule.TicketService.CreateTicket()
at Samba.Presentation.Services.Implementations.TicketModule.TicketService.OpenTicket(Int32 ticketId)
at Samba.Modules.PosModule.PosViewModel.OpenTicket(Int32 id)
at Samba.Modules.PosModule.PosViewModel.OnEntitySelectedForTicket(EventParameters1 eventParameters) at Microsoft.Practices.Prism.Events.EventSubscription1.InvokeAction(Action1 action, TPayload argument) at Microsoft.Practices.Prism.Events.EventSubscription1.<>c__DisplayClass2.b__0(Object[] arguments)
at Microsoft.Practices.Prism.Events.EventBase.InternalPublish(Object[] arguments)
at Microsoft.Practices.Prism.Events.CompositePresentationEvent`1.Publish(TPayload payload)
at Samba.Presentation.Services.Common.ExtensionMethods.Publish[TEventsubject](TEventsubject eventArgs, String eventTopic, Action expectedAction)
[Assembly Info]
Samba.Services, Version=1.0.0.0
mscorlib, Version=4.0.0.0
System, Version=4.0.0.0
Microsoft.Practices.Prism, Version=4.0.0.0
WindowsBase, Version=4.0.0.0
Samba.Infrastructure, Version=1.0.0.0
Samba.Infrastructure.Data, Version=1.0.0.0
PresentationFramework, Version=4.0.0.0
System.Xaml, Version=4.0.0.0
Samba.Presentation.Services, Version=1.0.0.0
FluentValidation, Version=3.4.0.0
Samba.Domain, Version=1.0.0.0
DevExpress.Xpf.Grid.v14.1, Version=14.1.6.0
DevExpress.Xpf.Grid.v14.1.Core, Version=14.1.6.0
PresentationCore, Version=4.0.0.0
Stateless, Version=1.0.0.0
System.Core, Version=4.0.0.0
System.Drawing, Version=4.0.0.0
DevExpress.Xpf.Core.v14.1, Version=14.1.6.0
EntityFramework, Version=4.4.0.0
System.Windows.Forms, Version=4.0.0.0
System.ComponentModel.Composition, Version=4.0.0.0
Samba.Localization, Version=1.0.0.0
Microsoft.CSharp, Version=4.0.0.0
Microsoft.Practices.ServiceLocation, Version=1.0.0.0
Samba.Persistance, Version=1.0.0.0
Microsoft.Practices.Prism.MefExtensions, Version=4.0.0.0
PropertyTools, Version=2012.4.14.1
[System Info]
Operating System
-Microsoft Windows 7 Professional
–CodeSet = 1252
–CSDVersion = Service Pack 1
–CurrentTimeZone = 180
–FreePhysicalMemory = 1026184
–OSArchitecture = 64-bit
–OSLanguage = 1033
–ServicePackMajorVersion = 1
–ServicePackMinorVersion = 0
–Version = 6.1.7601
Machine
-DELL-PC
–Manufacturer = Dell Inc.
–Model = Inspiron 3542
–TotalPhysicalMemory = 2047025152
–UserName = DELL-PC\DELL
See mention of exchange rate in there! Have you been altering curancies?
Yeah, I deleted all those changes though
It is on the default settings.
How do you mean deleted all those settings?
only sure fire way of reverting back to default setup would be new database.
Before going to POS go to manage and change the database connection string…
Just add 2 or test on end of database name, save and restart samba. Will start fresh database.
Then test POS, if works it’s going to be something you have done, likely deleted something which a rule is still trying to use for example.
Could you please guide me on how to do that? I’m a newbie 
I know that I made some changes to the accounts for my local currency, I didn’t realise there was no default currency assigned. I had assigned a new currency to my payment accounts. I then changed it back to its previous currency and it was working. Is there any way I can check what changes I have made?
I’ve updated question as Version 4 as that error message related with V4.
Check Sale Transaction Type of ticket if target default account exists and mapped properly.
No Backups, My data connection screen is blank… i never made any database… i was working with the sample data
so using local db i guess.
am less familier with local db as always used full SQL express.
Emre will know better than me, have you checked his sugestion;