Bug Can't migrate from 2019.3.13f1 to 2019.4.40f1

Tried updating my project from 2019.3.13f1 up to 2019.4.40f1 but it crashes some point during the upgrade process. Tried it multiple times.

I filed a bug report and got a quick response that versions of Unity before 2019.3 isn't supported and that I should try upgrading. And then the ticket was then closed. Um, okay. Not helpful on multiple levels.

 

Bumping this. Pretty similar issue where I can't migrate from 2019.3.7 to 2019.4 LTS.

 

Hi, check your logs, example path: "AppData\Local\Temp\Unity\Editor\Crashes\Crash_2020-06-19_083348619". In this folder open the "Editor.log" file and scroll to the bottom. There is a backtrace, and look for the asset name caused the crash. Then update the asset in a second project and replace the updated asset in your main project. Maybe you have to remove the asset from your project, if no update is available. Always make a backup!

You can also have a stacktrace like the following one. There you can see the Camera. In this case try to disable the camera effects scripts, especially the non Unity ones. But this then, if you crash in the Editor, after you can open it.

Code (CSharp):

1. 0x00007FF79349F063 (Unity) Shader::GetLocalKeywordRemap
2. 0x00007FF792339293 (Unity) ShaderLab::Pass::ApplyPass
3. 0x00007FF7922F8393 (Unity) ApplyMaterialPassWithCache
4. 0x00007FF7922F7F95 (Unity) ApplyMaterialPassAndKeywordsWithCache
5. 0x00007FF791A8FEA4 (Unity) BatchRenderer::ApplyShaderPass
6. 0x00007FF7919A3C3E (Unity) RenderCasters
7. 0x00007FF7919AB1FE (Unity) ShadowMapJob
8. 0x00007FF790DADC93 (Unity) GfxDevice::ExecuteAsync
9. 0x00007FF7919A6D71 (Unity) RenderShadowMaps
10. 0x00007FF791A8283D (Unity) RenderLightDeferred
11. 0x00007FF791A8342C (Unity) DeferredRenderLoop::RenderLighting
12. 0x00007FF791A7C1D2 (Unity) DoDeferredRenderLoop
13. 0x00007FF791A7D1E8 (Unity) DoRenderLoop
14. 0x00007FF791A2618F (Unity) Camera::DoRender
15. 0x00007FF790C6175D (Unity) Camera::RenderEditorCamera
16. 0x00007FF790C61953 (Unity) Camera::RenderEditorCamera
17. 0x00007FF7915859F8 (Unity) Handles_CUSTOM_Internal_DrawCameraWithGrid

 

Thanks for the input mkgame. But I'm afraid I didn't get too much information from the logs. There was a crash.dmp and an error.log file. No editor.log. Here's the starting contents of the error.log file:

Then a bunch of machine language and then this at the end:

Not much that I can discern in terms of the code/plugin that's causing the crash.

The crash.dmp file states: The thread tried to read from or write to a virtual address for which it does not have the appropriate access.