Access Violation Exception in SharpDX

[ShawnCG]

Dear Arction Support,

Here is a call stack of an exception that brought down our application. The Lightning Chart version is 6.0.9. We haven't been able to reproduce it, but if we can find a way to systematically create the exception, I'll update this post.

Thanks,
Shawn

Description: The process was terminated due to an unhandled exception.
Exception Info: System.AccessViolationException
Stack:
at SharpDX.Direct3D9.Device.QB(SharpDX.Direct3D9.PrimitiveType, Int32, IntPtr, Int32)
at SharpDX.Direct3D9.Device.DrawUserPrimitives[[A.VH, Arction.WPF.LightningChartUltimate, Version=6.0.9.4001, Culture=neutral, PublicKeyToken=72f55fbd6901f0e5]](SharpDX.Direct3D9.PrimitiveType, Int32, Int32, A.VH[])
at SharpDX.Direct3D9.Device.DrawUserPrimitives[[A.VH, Arction.WPF.LightningChartUltimate, Version=6.0.9.4001, Culture=neutral, PublicKeyToken=72f55fbd6901f0e5]](SharpDX.Direct3D9.PrimitiveType, Int32, A.VH[])
at A.DI.XJ[[A.VH, Arction.WPF.LightningChartUltimate, Version=6.0.9.4001, Culture=neutral, PublicKeyToken=72f55fbd6901f0e5]](SharpDX.Direct3D9.PrimitiveType, A.VH[])
at A.DI.VI(A.SH)
at Arction.WPF.LightningChartUltimate.LightningChartUltimate.SFC(System.Collections.Generic.List`1<Arction.WPF.LightningChartUltimate.SeriesXY.PointLineSeriesBase>, Int32, Arction.WPF.LightningChartUltimate.Axes.AxisX, Double, Double, Arction.WPF.LightningChartUltimate.GraphSegmentInfo, Boolean, Int32)
at Arction.WPF.LightningChartUltimate.LightningChartUltimate.NFC(Arction.WPF.LightningChartUltimate.Axes.AxisX, Double, Double, Int32, Double, Int32)
at Arction.WPF.LightningChartUltimate.LightningChartUltimate.KDC()
at Arction.WPF.LightningChartUltimate.LightningChartUltimate.ELC()
at Arction.WPF.LightningChartUltimate.LightningChartUltimate.EndUpdate()

[ArctionPasi]

It sounds like a threading problem. Invoke missing when updating chart?