Crash Log Aug14Build - 29Aug13

Hi, just submitting a crash log... hopefully this is the correct place?  I usually leave NVil running in the background throughout the work day in case I need it... today I didn't actually use it, but when I alt-tabbed over to the app at the end of the day, it immediately crashed, citing the crash report below.  No biggie in the case, but will report anyhow.  OS: Windows 7 x64.  Proc: Intel i7.  Mem: 16gb.  GPU: AMD 6700 series.  Was also running Photoshop CS4, 3ds Max 2012 x64, and ZBrush at the time.  Cheers ~ J

NVil Build 14Aug2013:
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Error in the application.
-2147467259 (E_FAIL)
   at Microsoft.DirectX.Direct3D.Device.PresentInternal(tagRECT* sourceRectangle, tagRECT* destRectangle, IntPtr overrideWindow)
   at Microsoft.DirectX.Direct3D.Device.PresentInternal(tagRECT* sourceRectangle, tagRECT* destRectangle, Control overrideWindow)
   at Microsoft.DirectX.Direct3D.Device.Present()
   at DigitalFossil.BaseGraphicWindow.Render3DEnvironment()
   at DigitalFossil.BaseGraphicWindow.FullRenderDetail(Boolean forced)