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--- rhino:crashhelp:lastresort [2019/07/24]
+++ rhino:crashhelp:lastresort [2020/08/14]
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+====== Diagnosing Rhino Startup Errors ======
+>If Rhino fails to start or crashes while starting on your computer, here are some things you can do to understand what is happening on your computer and fix the problem.
+====Rhino 6====
+  - Open the Registry Editor (From the Start menu in Windows, type **regedit**, then press Enter).
+  - In the registry, under HKEY_CURRENT_USER\Software\McNeel\Rhinoceros\6.0\Global Options\Debug Logging
+  - Create REG_DWORD (32) value named **Enabled** (if it doesn't already exist)
+  - Set **Enabled** to **1**
+  - Create REG_DWORD (32) value named **SaveToFile**  (if it doesn't already exist)
+  - Set **SaveToFile** to **1**
+  - Start **Rhino 6** using the **shortcut**, not by clicking on a data file.
+  - Send the **RhinoDebugMessages.txt** in your Documents folder to **tech@mcneel.com**.
+--> Rhino 5^
+--> Rhino won't start when double-clicking or dragging and dropping a file
+  * Double-click a Rhino **shortcut** on your desktop, or click a Rhino item in your **Start** menu.
+  * If Rhino starts:
+    * Open the file from the **File** menu > **Open** or the **Open** toolbar button. If the file won't open, the problem is probably with the file. Try the **Audit3dmFile** command on the file.
+<--
+--> Rhino won't start from a desktop or Start menu shortcut
+  * Start in SafeMode.
+    * SafeMode starts Rhino without using accelerated graphics and without loading plug-ins.
+    * On the **Windows Start Menu**, click the item **Rhinoceros 5.0 in Safe Mode** or **Rhinoceros 5.0 (64-bit) in Safe Mode**.
+      * Answer **Yes** to loading Toolbars and **No** to loading RDK.
+  * If Rhino starts in SafeMode, there is likely a problem with a video driver or a plug-in.
+    * In the Rhino menu: //Tools - Options - View - OpenGL//, uncheck the box at the top labeled **Use accelerated hardware modes**.
+    * Close Rhino and start normally (not using SafeMode).
+    * If Rhino starts with accelerated hardware disabled, the problem is likely your video card driver.
+      * Download and install a current driver for your video card. It's best to get your driver update from your hardware manufacturer and not from a third-party site.
+        * NVIDIA:  http://www.nvidia.com/Download/index.aspx
+        * Intel:   http://downloadcenter.intel.com/Default.aspx
+        * ATI/AMD: http://support.amd.com/us/gpudownload/Pages/index.aspx
+        * Apple:   http://support.apple.com/downloads/#bootcamp
+        * Other sites appropriate to your video hardware.
+        * Note: If you're on a laptop, you'll probably have to get your driver update from the laptop maker.
+      * Restart Rhino normally (not using SafeMode).
+    * If Rhino still crashes after disabling hardware acceleration, the problem may be a plug-in.
+      * Restart in SafeMode, and check the box **Use accelerated hardware modes**.
+      * In the Rhino menu //Tools - Options - Plug-ins//, uncheck the **Enabled** box for all of the plug-ins that did not ship with Rhino, and check the box **Ask to load disabled plug-ins** at the bottom.
+      * Close Rhino and start normally (not using SafeMode).
+        * Answer **No** to loading all of the plug-ins you disabled.
+      * If Rhino starts with some plug-ins disabled, the problem is one of the disabled plug-ins.
+        * Restart Rhino normally and answer **Yes** to loading **one plug-in at a time** and **No** to the rest until you determine which one causes the problem.
+        * When you have determined which plug-in causes a problem, go back to //Tools - Options - Plug-ins// and check the **Enabled** box for all of the plug-ins that don't cause a problem.
+      * If Rhino crashes in SafeMode or you can't resolve the problem with these methods, contact us at http://www.rhino3d.com/support for help.
+<--
+<--

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