I get this error message when trying to open Mocap Studio 3.



iPi Mocap Studio version 3.0.0.166 [<unknown>]
.NET: 4.0.30319.0
OS: Microsoft Windows NT 6.3.9600.0

System.NullReferenceException: Object reference not set to an instance of an object.
at SharpDX.DataBuffer.Clear(Byte value)
at SharpDX.Toolkit.Graphics.EffectConstantBuffer..ctor(GraphicsDevice device, ConstantBuffer description)
at SharpDX.Toolkit.Graphics.Effect.GetOrCreateConstantBuffer(GraphicsDevice context, ConstantBuffer bufferRaw)
at SharpDX.Toolkit.Graphics.EffectPass.InitStageBlock(StageBlock stageBlock, Logger logger)
at SharpDX.Toolkit.Graphics.EffectPass.Initialize(Logger logger)
at SharpDX.Toolkit.Graphics.Effect.InitializeFrom(Effect effectDataArg, Effect cloneFromEffect)
at SharpDX.Toolkit.Graphics.Effect.CreateInstanceFrom(GraphicsDevice device, EffectData effectData, EffectPool effectPool)
at SharpDX.Toolkit.Graphics.PrimitiveQuad..ctor(GraphicsDevice graphicsDevice)
at SharpDX.Toolkit.Graphics.GraphicsDevice..ctor(Device existingDevice, GraphicsAdapter adapter)
at #=qR_JXOtmEhcY4So7ursAb5dlZimBIPBIDVbqrdAkgxip4gnk_Wjg5VuoaWrblB_XG.#=qPFjSmtD5Zi1ONl1X_R7B9tbXrtZwzyraD2c1HmMU75E=()
at #=qR_JXOtmEhcY4So7ursAb5dlZimBIPBIDVbqrdAkgxip4gnk_Wjg5VuoaWrblB_XG.#=qiazWlzp7TWsLbs5qWa8uLSzV9trmJPG9Ozy$6TOE7lg=()
at -.dje_qBQX2Z4BJ6Z6KAA5CF9J4BRUSFD8ECK63DDR73ZYHTHBGS9B5KVNSETGX33CL3QMRWRU6HMT4GCPEZ_ejd.#=qiazWlzp7TWsLbs5qWa8uLSzV9trmJPG9Ozy$6TOE7lg=()
at -.dje_qUWKGYS73KTXQWGQPKXEQNNTSLVJTDGS5ETVKPHGYH5G8TZMRK5VA_ejd.dje_qALP3UXXJN5A7GW8NS43A4L4KT6BR3677JFE7B9AT6X5L7N4N2V7Q_ejd(Object #=qiaCemh16Am8pWWGeOcqlNw==, RoutedEventArgs #=qlUn3Hih4wapAQAzJG2G3Sw==)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.BroadcastEventHelper.BroadcastEvent(DependencyObject root, RoutedEvent routedEvent)
at System.Windows.BroadcastEventHelper.BroadcastLoadedEvent(Object root)
at MS.Internal.LoadedOrUnloadedOperation.DoWork()
at System.Windows.Media.MediaContext.FireLoadedPendingCallbacks()
at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
at System.Windows.Interop.HwndTarget.OnResize()
at System.Windows.Interop.HwndTarget.HandleMessage(WindowMessage msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Interop.HwndSource.HwndTargetFilterMessage(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)

Hi

We've just released an update 3.0.1.169 to iPi Mocap Studio. You can download it here.
Please update and try again. If you still encounter the problem, please post an error message from the new version.

Still not working:

iPi Mocap Studio version 3.0.1.169 [<unknown>]

ENVIRONMENT
OS: Microsoft Windows NT 6.3.9600.0 (64 bits)
.NET: 4.0.30319.0
CPU count: 8
GPU Information:
NVIDIA GeForce GTX 760 (VendorID=10DEh, DeviceID=1187h, SubsystemID=361C1458h, Revision=A1h)
Primary: yes, Integrated: no, Compatible: yes, Used: yes
Memory: 3.9 GB dedicated video + 0 B dedicated system + 8.0 GB shared system
Outputs: (2560x1080@60 R8G8B8A8_UNorm)
NVIDIA GeForce GTX 760 (VendorID=10DEh, DeviceID=1187h, SubsystemID=361C1458h, Revision=A1h)
Primary: no, Integrated: no, Compatible: yes, Used: yes
Memory: 3.9 GB dedicated video + 0 B dedicated system + 8.0 GB shared system
Outputs: (1920x1080@50 R8G8B8A8_UNorm), (1920x1080@60 R8G8B8A8_UNorm)

PROCESS
GC: Workstation (Interactive)
Running in 64 bits

EXCEPTION
System.NullReferenceException: Object reference not set to an instance of an object.
at SharpDX.DataBuffer.Clear(Byte value)
at SharpDX.Toolkit.Graphics.EffectConstantBuffer..ctor(GraphicsDevice device, ConstantBuffer description)
at SharpDX.Toolkit.Graphics.Effect.GetOrCreateConstantBuffer(GraphicsDevice context, ConstantBuffer bufferRaw)
at SharpDX.Toolkit.Graphics.EffectPass.InitStageBlock(StageBlock stageBlock, Logger logger)
at SharpDX.Toolkit.Graphics.EffectPass.Initialize(Logger logger)
at SharpDX.Toolkit.Graphics.Effect.InitializeFrom(Effect effectDataArg, Effect cloneFromEffect)
at SharpDX.Toolkit.Graphics.Effect.CreateInstanceFrom(GraphicsDevice device, EffectData effectData, EffectPool effectPool)
at SharpDX.Toolkit.Graphics.PrimitiveQuad..ctor(GraphicsDevice graphicsDevice)
at SharpDX.Toolkit.Graphics.GraphicsDevice..ctor(Device existingDevice, GraphicsAdapter adapter)
at #=q_bGREXl5AafiUyGGXs2vEv99MyYRsSxUND3qvQ8SqN4VUcvtqV0l0gcqXu$XGPTi.#=qKJDrTjYP_8Ohloig6XPLKeUNrJcShCVz9pIgl2C7Cz0=()
at #=q_bGREXl5AafiUyGGXs2vEv99MyYRsSxUND3qvQ8SqN4VUcvtqV0l0gcqXu$XGPTi.#=qL94iowLbYAF_LRncA0jpkmC1wGW3pHFsuHgNXTQLVGE=()
at -.dje_qWW62XZS8QSLSR9RUSSFF2XFAULKKMAFDXXV656UK2VXHQXR3FBSZ267JL3CNBF63T6Z9E39Y8UGHR_ejd.#=qL94iowLbYAF_LRncA0jpkmC1wGW3pHFsuHgNXTQLVGE=()
at -.dje_qRZSXME5AU6NAXATNL2XGYBZHHRWWWN4KGAERVFPT4Q89PTLUPSVA_ejd.dje_qKTDU98R32W6F7PLBR2VN3Z82BSPE4DJ9DUWYHGLXN274ABU2SVMQ_ejd(Object #=qo4spNnjv6UxUPs7ni6o3eg==, RoutedEventArgs #=q_LQcRYC3vrAMM0wq8qUfSA==)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.BroadcastEventHelper.BroadcastEvent(DependencyObject root, RoutedEvent routedEvent)
at System.Windows.BroadcastEventHelper.BroadcastLoadedEvent(Object root)
at MS.Internal.LoadedOrUnloadedOperation.DoWork()
at System.Windows.Media.MediaContext.FireLoadedPendingCallbacks()
at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
at System.Windows.Interop.HwndTarget.OnResize()
at System.Windows.Interop.HwndTarget.HandleMessage(WindowMessage msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Interop.HwndSource.HwndTargetFilterMessage(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)

OK, so the error persists...

Please try the following and write whether some of these (or their combination) helps:

• Update video drivers
• Disconnect 1 or 2 displays
• Change resolution of the primary display to 1920x1080 or less.
• Disable/remove the second video card

Video Drivers are up to date.

Disconnecting all displays except one doesn't change anything.
Changing the resolution to 1920x1080 doesn't change anything.

Haven't tried removing the second card yet. Will get back to you when I do.

As it turns out, the USB 3.0 drivers on desktop computer won't work with the Kinect 2.0 anyway, so I tried it on my laptop and it worked fine.

So problem averted I guess.

Hello csharp1024,

Please try updated version 3.0.2.171: http://docs.ipisoft.com/iPi_Mocap_Studio_Release_Notes