Error in WriteDocument?

just started getting this error this morning. any ideas?

it happens when i try to save a file and i think it is happening on an autosave. the file does save successfully.

thanks.

adadada

Hi - Are you getting this when you start a new file from a factory-default template?
Please run the Rhino SystemInfo command and copy-paste the result here.
-wim

ok, using a default template still shows the error.

Rhino 6 SR27 2020-6-11 (Rhino 6, 6.27.20163.15081, Git hash:master @ 8c9f18774d0fe24946068d123d78712d7a17f847)
License type: Commercial, build 2020-06-11
License details: Stand-Alone

Windows 10.0 SR0.0 or greater (Physical RAM: 32Gb)
Machine name: RGILMORE

Hybrid graphics system.
Primary display: Intel(R) UHD Graphics P630 (Intel) Memory: 1GB, Driver date: 3-9-2020 (M-D-Y).
Primary OpenGL: NVIDIA Quadro P1000 (NVidia) Memory: 4GB, Driver date: 4-7-2020 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 442.92

OpenGL Settings
  Safe mode: Off
  Use accelerated hardware modes: On
  Redraw scene when viewports are exposed: On
  
  Anti-alias mode: 8x
  Mip Map Filtering: Linear
  Anisotropic Filtering Mode: Height
  
  Vendor Name: NVIDIA Corporation
  Render version: 4.6
  Shading Language: 4.60 NVIDIA
  Driver Date: 4-7-2020
  Driver Version: 26.21.14.4292
  Maximum Texture size: 32768 x 32768
  Z-Buffer depth: 24 bits
  Maximum Viewport size: 32768 x 32768
  Total Video Memory: 4 GB

Rhino plugins
  C:\Program Files\Rhino 6\Plug-ins\Commands.rhp	"Commands"	6.27.20163.15081
  C:\Program Files\Rhino 6\Plug-ins\rdk.rhp	"Renderer Development Kit"	
  C:\Program Files\Rhino 6\Plug-ins\RhinoScript.rhp	"RhinoScript"	
  C:\Program Files\Rhino 6\Plug-ins\RPC.rhp	"RPC"	
  C:\Program Files\Rhino 6\Plug-ins\AnimationTools.rhp	"AnimationTools"	
  C:\Program Files\Rhino 6\Plug-ins\Squish.rhp	"Squish"	
  C:\Program Files\Rhino 6\Plug-ins\RhinoRender.rhp	"Rhino Render"	
  C:\Program Files\Rhino 6\Plug-ins\rdk_etoui.rhp	"RDK_EtoUI"	6.27.20163.15081
  C:\Program Files\Rhino 6\Plug-ins\rdk_ui.rhp	"Renderer Development Kit UI"	
  C:\Users\monke\AppData\Roaming\McNeel\Rhinoceros\6.0\Plug-ins\PanelingTools (6caed836-bc06-4ebc-b1fd-e10886a0dc94)\2018.12.17.906\PanelingTools.rhp	"PanelingTools"	
  C:\Program Files\Rhino 6\Plug-ins\NamedSnapshots.rhp	"Snapshots"	
  C:\Program Files\Rhino 6\Plug-ins\RhinoCycles.rhp	"RhinoCycles"	6.27.20163.15081
  C:\Program Files\Rhino 6\Plug-ins\Toolbars\Toolbars.rhp	"Toolbars"	6.27.20163.15081
  C:\Program Files\Rhino 6\Plug-ins\3dxrhino.rhp	"3Dconnexion 3D Mouse"	
  C:\Program Files\Rhino 6\Plug-ins\Displacement.rhp	"Displacement"	
  C:\Program Files (x86)\Seanaptic\64_V6\Seanaptic.rhp	"Seanaptic"	5.2.0.0
  C:\Users\monke\AppData\Roaming\McNeel\Rhinoceros\packages\6.0\ColorPicker\6.0.0\ColorPicker.rhp	"ColorPicker"	
  C:\Users\monke\AppData\Roaming\McNeel\Rhinoceros\packages\6.0\raytraced-materials\0.1.3+v6.15\RaytracedMaterials.rhp	"Raytraced Materials"	0.1.3.0
  C:\Users\monke\AppData\Roaming\McNeel\Rhinoceros\packages\6.0\SectionTools\2019.7.29+584\SectionTools.rhp	"SectionTools"

Hi - what happens when you start in safe mode?
-wim

safe mode worked so i deleted:

C:\Program Files (x86)\Seanaptic\64_V6\Seanaptic.rhp "Seanaptic" 5.2.0.0

and it seems to be fine now.

thank you, sorry i should have tried safe mode before asking.