Unity 2019.4.0 crashes on startup

[monark]

Since trying to upgrade my project to Unity 2019.3.15 I’ve had a complete Unity melt down.

So this is all on a Mac

Starting with 2019.2.9 I’ve been working happily for many months, but that version is no longer supported so I bit the bullet and upgraded to 2019.3.15.
Unfortunately in doing so I’ve ended being unable to open the project without first deleting the entire Library every time.
I’ve also tried 2019.4.0 which has the same issue and 2020.1.0 also the same, though I can get away with just deleting the artifacts folder and db on that one.

Returning to 2019.2.9 I now find I can no longer hit play without Unity immediately crashing so I’m stuck between a rock and a hard place.

I’m trying to uninstall everything and re-install 2019.2.9 in the hope that will at least start working again but any pointers on getting Unity stable again with higher versions would be great.

I’ve also tried resetting the package manager to defaults all to no avail.

The only info in the editor logs is this:
[2020-06-09T14:51:46.941Z][INFO] Starting Server
[2020-06-09T14:51:46.952Z][INFO] Server started on port [51989]
[2020-06-09T14:51:47.212Z][INFO] Health Request received
[2020-06-09T14:51:47.473Z][WARN] Package folder [/Volumes/TOSHIBA EXT/Dev/Unity/Prototype-v1.0 - 2019.4.0/Packages/Models] missing package manifest.
[2020-06-09T14:51:47.474Z][INFO] Resolving dependencies by depth
[2020-06-09T14:51:56.292Z][ERROR] [Unity Package Manager (Upm)]
Parent process [13063] was terminated

But the manifest is not missing and looks fine to me.

[monark]

I’ve managed to get 2019.2.9 working again at least, re-installing it seems to have fixed that issue, but I still can’t upgrade to any of the newer supported versions.

[Joe-Censored]

Lot of crash issues on Macs lately, some seem to be resolved by enabling Metal.

Unity editor crashes macOS

I am using Unity 2019.3.0b1 on a Macbook pro (mid 2015). When editor tries to open after importing the assets from an existing project macOS crashes with a kernel panic. After rebooting i am able to open editor but then macOS randomly crashes again when i click on an editor window. This is the kernel panic report: Anonymous UUID: 47D52836-7B3B-EFD8-C8D6-DABB06DE7731 Wed Sep 4 10:35:16 2019 *** Panic Report *** panic(cpu 3 caller 0xffffff80062dbadd): Kernel trap at 0xffffff7f872d65db, …

[monark]

Says on the title of the project when I open it already…

[Saismirk]

Same exact issue on Win10 after upgrading 2019.3.0 project to either 2019.3.15 or 2019.4.0.
Seems to happen if you have switched to HDRP/URP while having Shader Variant assets that were made in the built-in pipeline and then attempting to upgrade the project. Deleting such shader variant assets solves the issue.

[FlorianB]

@Saismirk

Same exact issue on Win10 after upgrading 2019.3.0 project to either 2019.3.15 or 2019.4.0.
Seems to happen if you have switched to HDRP/URP while having Shader Variant assets that were made in the built-in pipeline and then attempting to upgrade the project. Deleting such shader variant assets solves the issue.

Hello Saismirk,

I seem to have the exact same issue but I’m not too familiar with the Shader Variant you are mentionning, could you be more specific of where to find them so I could try your solution plz ?

Thank you.

[monark]

Worked for me!

You can find it in Project settings/Graphics right at the bottom. I deleted the reference, clicked clear and now it opens.
However if I make a new one then the problem returns.