Chaos Cache Manager not working in 5.6.1

General Issues and Bug Reporting
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1

Summary

Chaos Cache Manager not working in 5.6.1, with the same procedure in 5.5.4 works.
It simulates when played but it does not cache.

Please select what you are reporting on:

Creative

What Type of Bug are you experiencing?

Stability

Steps to Reproduce

Fracture a static mesh and create a geometry collection.
Create Chaos Cache Manager.
Create Master Field in the viewport.
Make sure the Chaos Cache Manager is set to be recorded.
Hit simulate.

Expected Result

When changing Cache Mode to Static Pose and play with Start Time slider, it plays the cached animation.

Observed Result

Nothing is cached and animated in static pose mode. Exact same procedure in 5.5.4 works.

Platform(s)

Platform: Windows 11 (24H2) [10.0.26100.4946] (x86_64)

Video

2

I’m having the exact same issue. Let me know if anyone finds a solution please.

3

Me too, hurry up and do it Epic :face_with_bags_under_eyes:

2 Likes
4

I’m having the same issue. Wasted 2 whole days trying to get it work before I saw these bug reports on the forums. Thankyou @Kosuke_Iwasaki for taking the time to fill out the report!

1 Like
5

FORT-971850 has been created and its status is ‘Unconfirmed’. This is now in a queue to be reproduced and confirmed.

6

facing the same issue…this 5.6.1 have so many bugs and crashes…it is CrashReal not unreal now

7

Hi

the issue is caused by the root proxy mesh that is set on the geometry collection
in 5.6 root proxy don’t play well with caches

in 5.6 and 5.6.1, you can workaround the issue by

  • not checking the “Use Root Proxy“ option when creating the geometry collection ( see screenshot below )
  • or set the “Custom renderer Type” to None in the geometry collection asset

image
image512×194 26 KB

image
image664×235 7.51 KB

The issue is fixed for the incoming 5.7 release and if you build from source and are interested in taking the fix directly. The Github link to the fix can be found here :

https://github.com/EpicGames/UnrealEngine/commit/d42ef17e214fccb9584b18fd6c2289c99b2ff7db

Hope this helps

4 Likes
8

Work for me but setting “Custom renderer Type” like this

image
image1378×343 12.3 KB

1 Like
9

It’s working. Thanks a lot

1 Like
10

deselecting the “Use Root Proxy“ option when creating the geometry collection is what worked for me when i actually render out the Sequence. Setting render type to none seems to work only in sequencer but not when rendering out. Either way, THANKS a ton!

1 Like