Hi, this is the text in tapv2 file:

Version: Version 2.14.2 Patch D (Alpha)

16/02/2022: 13:39 code = CantOpen (14), message = System.Data.SQLite.SQLiteException (0x800007FF): unable to open database file

   at System.Data.SQLite.SQLite3.Open(String strFilename, String vfsName, SQLiteConnectionFlags connectionFlags, SQLiteOpenFlagsEnum openFlags, Int32 maxPoolSize, Boolean usePool)

   at System.Data.SQLite.SQLiteConnection.Open()

   at SQLiter.SQLiter.GetTable[T]()

   at TheAirlineProjectV2.Infrastructure.Model.GeneralModel.Setup.SetupGame() in D:\OneDrive\bureaublad\TAP\TAP Code\TheAirlineProjectV2.Infrastructure\Model\GeneralModel\Setup.cs:line 45

   at TheAirlineProjectV2.Bootstrapper.InitializeShell() in D:\OneDrive\bureaublad\TAP\TAP Code\TheAirlineProjectV2\Bootstrapper.cs:line 40

   at Prism.Unity.UnityBootstrapper.Run(Boolean runWithDefaultConfiguration)

   at Prism.Bootstrapper.Run()

   at TheAirlineProjectV2.App.OnStartup(StartupEventArgs e) in D:\OneDrive\bureaublad\TAP\TAP Code\TheAirlineProjectV2\App.xaml.cs:line 27

   at System.Windows.Application.<.ctor>b__1_0(Object unused)

   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)

   at System.Windows.Threading.DispatcherOperation.InvokeImpl()

   at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)

   at MS.Internal.CulturePreservingExecutionContext.CallbackWrapper(Object obj)

   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 MS.Internal.CulturePreservingExecutionContext.Run(CulturePreservingExecutionContext 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 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, 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.Application.RunDispatcher(Object ignore)

   at System.Windows.Application.RunInternal(Window window)

   at System.Windows.Application.Run(Window window)

   at System.Windows.Application.Run()

   at TheAirlineProjectV2.App.Main()

Have you unzipped the folder after downloading?
Have you tried running the game in administrator mode?
Have you changed anything in the database?
Are you trying to run a savefile that is not yours?

These are the first things that pop in my mind when I see that error. :)