Hi,
I can say that this issue could be even worse if there was no a backup version of my project that i’m heavily working on,
Anyway here’s what exactly happened step by step
System Info
Rhino 6 SR19 2019-10-22 (Rhino 6, 6.19.19295.01001, Git hash:master @ 0af62045bd35259d4c2367dbf7f9ef94ded29299)
License type: Educational, build 2019-10-22
License details: Stand-Alone
Windows 10.0 SR0.0 or greater (Physical RAM: 16Gb)
Hybrid graphics system.
Primary display: Intel® HD Graphics 530 (Intel) Memory: 1GB, Driver date: 5-4-2016 (M-D-Y).
Primary OpenGL: NVIDIA GeForce GTX 960M (NVidia) Memory: 4GB, Driver date: 4-9-2019 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 425.31
OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On
Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: Height
Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 4-9-2019
Driver Version: 25.21.14.2531
Maximum Texture size: 16384 x 16384
Z-Buffer depth: 24 bits
Maximum Viewport size: 16384 x 16384
Total Video Memory: 4 GB
Rhino plugins
D:\Program Files\Mcneel\Rhino 6\Plug-ins\Commands.rhp “Commands” 6.19.19295.1001
D:\Program Files\Mcneel\Rhino 6\Plug-ins\rdk.rhp “Renderer Development Kit”
D:\Program Files\Mcneel\Rhino 6\Plug-ins\AnimationTools.rhp “AnimationTools”
D:\Program Files\Mcneel\Rhino 6\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 6.19.19295.1001
D:\Program Files\Mcneel\Rhino 6\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
D:\Program Files\Mcneel\Rhino 6\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Users\dahma\AppData\Roaming\McNeel\Rhinoceros\6.0\Plug-ins\Lumion LiveSync for Rhino (839d6175-32d1-4ffe-a0a4-b7fb43cf0ff5)\2019.6.17.913\Lumion\Rhino 6.0\LumionPlugin.rhp “Lumion LiveSync for Rhino”
D:\Program Files\Mcneel\Rhino 6\Plug-ins\RhinoCycles.rhp “RhinoCycles” 6.19.19295.1001
D:\Program Files\Mcneel\Rhino 6\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 6.19.19295.1001
D:\Program Files\Mcneel\Rhino 6\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Chaos Group\V-Ray\V-Ray for Rhinoceros\V6\VRayForRhino.rhp “V-Ray for Rhino”
D:\Program Files\Mcneel\Rhino 6\Plug-ins\Displacement.rhp “Displacement”
D:\Program Files\Mcneel\Rhino 6\Plug-ins\NamedPositions.rhp “Named Position”
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Opened Rhino to get into a new empty project (I didn’t want to do that but I always open Rhino from its Icon in order to open last saved files from Welcome/loading screen, but I missed it so I got into a new default empty project so no previous files were opened)
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I opened “about menu” (Help -> About Rhinoceros -> Opened a project) in order to open my last saved project
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Rhino asks me if I want to save the new empty project before closing it and opening my previous project
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I misclicked on yes, then it asks me to choose a location, I hit Cancel immediately and went back to “About Menu” and I noticed that the empty new project was replaced with my previous project that has not been opened at all through this process.
I think this is serious situation that could cause anyone to loose the work if there is no backup files for some reason.