Cannot get DAX to work after updating from Windows 8 to 8.1.

I have submitted a ticket on this but beginning to think that my problem might be unique. My 6500 has been working with no problem with the latest version of software with DAX. When I updated win8 to 8.1 DAX worked for 2 days and then failed. The 6500 is working OK but there is no DAX. Repeated attempts at uninstalling, re-booting and re-installing have not worked. Here is the lengthy event viewer report: Log Name: Application Source: Application Error Date: 1/19/2014 6:52:05 PM Event ID: 1000 Task Category: (100) Level: Error Keywords: Classic User: N/A Computer: OFFICEDELL Description: Faulting application name: DAXWPF.exe, version: 1.0.2.22, time stamp: 0x52b4eafc Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000 Exception code: 0xc0000005 Fault offset: 0x0bec20cd Faulting process id: 0x13c0 Faulting application start time: 0x01cf15714c299d38 Faulting application path: C:Program FilesFlexRadio SystemsSmartSDR Beta_v1.0.24DAXDAXWPF.exe Faulting module path: unknown Report Id: b282049b-8164-11e3-bf97-f4b7e20fbee0 Faulting package full name: Faulting package-relative application ID: Event Xml: 1000 2 100 0x80000000000000 636563 Application OFFICEDELL DAXWPF.exe1.0.2.2252b4eafcunknown0.0.0.000000000c00000050bec20cd13c001cf15714c299d38C:Program FilesFlexRadio SystemsSmartSDR Beta_v1.0.24DAXDAXWPF.exeunknownb282049b-8164-11e3-bf97-f4b7e20fbee0 Log Name: Application Source: .NET Runtime Date: 1/19/2014 6:52:05 PM Event ID: 1026 Task Category: None Level: Error Keywords: Classic User: N/A Computer: OFFICEDELL Description: Application: DAXWPF.exe Framework Version: v4.0.30319 Description: The process was terminated due to an unhandled exception. Exception Info: System.NullReferenceException Stack: at PortAudioSharp.PortAudio.Pa_GetDeviceInfo(Int32) at PortAudioSharp.DAXAudio..ctor(Int32, Int32, Int32, Int32, UInt32, PaStreamCallbackDelegate, IntPtr) at DAXWPF.AudioStreamViewModel.b__6() at System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate) at System.Windows.Threading.DispatcherOperation.InvokeImpl() at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(System.Object) at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object) at System.Windows.Threading.DispatcherOperation.Invoke() at System.Windows.Threading.Dispatcher.ProcessQueue() at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef) at MS.Win32.HwndWrapper.WndProc(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(System.Object) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate) at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority, System.TimeSpan, System.Delegate, System.Object, Int32) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr, Int32, IntPtr, IntPtr) at MS.Win32.UnsafeNativeMethods.DispatchMessage(System.Windows.Interop.MSG ByRef) at System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame) at System.Windows.Threading.Dispatcher.PushFrame(System.Windows.Threading.DispatcherFrame) at System.Windows.Threading.Dispatcher.Run() at System.Windows.Application.RunDispatcher(System.Object) at System.Windows.Application.RunInternal(System.Windows.Window) at System.Windows.Application.Run(System.Windows.Window) at DAXWPF.App.Main() Event Xml: 1026 2 0 0x80000000000000 636562 Application OFFICEDELL Application: DAXWPF.exe Framework Version: v4.0.30319 Description: The process was terminated due to an unhandled exception. Exception Info: System.NullReferenceException Stack: at PortAudioSharp.PortAudio.Pa_GetDeviceInfo(Int32) at PortAudioSharp.DAXAudio..ctor(Int32, Int32, Int32, Int32, UInt32, PaStreamCallbackDelegate, IntPtr) at DAXWPF.AudioStreamViewModel.<set_AudioStream>b__6() at System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate) at System.Windows.Threading.DispatcherOperation.InvokeImpl() at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(System.Object) at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object) at System.Windows.Threading.DispatcherOperation.Invoke() at System.Windows.Threading.Dispatcher.ProcessQueue() at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef) at MS.Win32.HwndWrapper.WndProc(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(System.Object) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate) at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority, System.TimeSpan, System.Delegate, System.Object, Int32) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr, Int32, IntPtr, IntPtr) at MS.Win32.UnsafeNativeMethods.DispatchMessage(System.Windows.Interop.MSG ByRef) at System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame) at System.Windows.Threading.Dispatcher.PushFrame(System.Windows.Threading.DispatcherFrame) at System.Windows.Threading.Dispatcher.Run() at System.Windows.Application.RunDispatcher(System.Object) at System.Windows.Application.RunInternal(System.Windows.Window) at System.Windows.Application.Run(System.Windows.Window) at DAXWPF.App.Main() Bob VE3ODR