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  1. Yes, usually in those cases the shader compiler (of the gpu driver) failed. Either due to driver bug or because the shader was too complex for the driver to handle (which could be a driver bug too, as the capabilities the driver claims being able to handle are considered). Best regards, Wilfried
  2. The issue as introduced with the NVIDIA 39x.xx drivers and - depending on the timing of your machine - the issue can happen in R20, R19, R18, ... . If you're running into this issue, then besides reverting to a not crashing driver is disabling the threaded viewport redraw to work around this driver (crash) bug: To enable the workaround a command line parameter needs to be set for Cinema: g_threadedRedraw=false It will - as the name implies - disable the threaded redraw in the viewport (which is triggering the NVIDIA driver crash). This parameter can either be set via the Windows command console or - easier - by creating a program shortcut and adding the parameter to the target field. These are the steps to create the program shortcut: 1. Select the CINEMA 4D.exe in the Explorer and press the right mouse button. 2. Create a shortcut for the program. 3. Open the properties of the shortcut. 4. The first editable field of the shortcut contains a line called "Target" which contains the program path and name enclosed in quotation marks. Add one space behind the last quotation mark and add g_threadedRedraw=false (without any quotation marks) at the end of this line. The resulting "Target" line might (depending on the install path) be something like: "C:\Program Files\MAXON\R17\CINEMA 4D.exe" g_threadedRedraw=false 5. Confirm your changes with "OK". Regarding how MAXON tracks bugs: It happens (of course) in a database and the crash reporter (that 's popping up in case of a crash) is used to submit them - in case you submitted a valid email address, support or development will use this to get in touch with you. Best regards, Wilfried



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