the crash seems to be caused by the mod Enviromental from the Abnormals series of mods.
crash-2021-06-16_14.09.27-fml.txt

it also happens with Atmosperic (also a Abnormals mod).
crash-2021-06-16_14.16.01-fml.txt

but create and the Abnormals core mod work fine together from my testing

+1 this.

The issue also happens with the Outer End mod: Crashlog - Create with Outer End by Abnormals Team.

But, it does not happen with Buzzier Bees, tested and it works fine on my side.

PS: Crashlog - Create with both mods on.

Also happens with Autumnal which is by Abnormals Team as well.

I am just going to leave this one open since I have closed like four other versions of this issue already today and that doesn't seem to be helping things.

The crash is due to a change made to AbnormalsCore in their 3.2.0 release that Create was not equipped to handle properly. For now you can prevent the crash by downgrading to AbnormalsCore 3.1.1. I have already pushed a fix to Create's dev branch so the crash should no longer occur with AbnormalsCore 3.2.0 once the next release of Create comes out.

I have already pushed a fix to Create's dev branch so the crash should no longer occur with AbnormalsCore 3.2.0 once the next release of Create comes out.

Out of curiosity, is there an ETA for the next release of Create?

Hopefully soon(tm), but there's no official ETA

crash-2021-07-04_12.06.17-fml.txt
Not sure if this is the same issue. But Creat keeps Failing to Initialize when I started my Game. I Rolled back a Version and still had the same Issue.

I Rolled back a Version and still had the same Issue.

Roll back your version of Abnormals core (to 3.1.1) , you do not need to rollback your version of Create.

It would be nice to update Create more often for fixing the issues, even if there is no new content, because waiting so long time for updating just cause an accumulation of issues which makes it impossible to play with any other mods.

Soon™

Rolling back to Abnormals Core 3.1.1 rendered my modpack playable again, so it is a nice workaround until Create releases the next update.
It's understandable that updating your own mod because someone elses mod broke something isn't high up on the priority list. Take your time, do it well. I can wait patiently.

Cheers,
Griefed

Now that Create 0.3.2 has been released, updating to it will resolve this issue.

There's no reference to the Create mod or Flywheel in the crash report, so likely the issue lies elsewhere.

Updating ONLY Create (adding Flywheel) and Abnormals Core seems to still crash for me on certain entities being discovered. In this case, a mob from the Outvoted mod now triggers it. Crash report here: https://pastebin.com/WwrrCfbf

Please let me know if this is somehow unrelated and I will post to the correct issue list.