Piotr
April 28, 2026, 10:51am
1
I’m having strange issue:
Bake using Model Object - everything is correct
Bake using Content Cache - every element is doubled, baking is slow and Purge isn’t working.
Anyone having the same issue?
When I pass the output via Geometry it is loosing properties but doesn’t double elements.
Intuos
April 28, 2026, 10:55am
2
Yeah, I’ve been waiting for a fix for about a month now:
There seems to be a problem with Content Cache and Query Model Objects, because I Grasshopper keeps triggering pushes again without changing the input geometry. This used to be working without retriggering pushes, which slows down the canvas considerably with further downstream processing.
Layer keeps pushing.3dm (225.9 KB)
Layer keeps pushing.gh (10.4 KB)
s
Work In Progress (9.0.26084.12305, 2026-03-25)
If you have any simple means to reproduce your issues, it’s probably good to post some test files here, considering the problem has been under McNeel’s radar for a while.
Piotr
April 28, 2026, 11:09am
3
It would have been easy if Model Object allowed for internalizing data (which comes from monster file).
I was loosing my mind over it, thanks for letting me know it is not an error on my side.
Intuos
April 28, 2026, 11:13am
4
Agreed, that would ease trouble shooting considerably.
Piotr
April 28, 2026, 12:08pm
5
What’s more interesting…
the left tree is not doubled when baked, the right one doubles everything
Japhy
(Japhy)
April 28, 2026, 3:16pm
6
A simple example sans 3rd party plugins would be extremely helpful. Thanks
Piotr
April 29, 2026, 9:31am
7
(gonna be like Joseph here)
I think I found the source of the problem:
this set of materials bakes ok
this one has a lots of materials imported with files (and bakes double):
It bakes OK when only one materias is applied:
I tested this with local or imported material, so, maybe, the error is not within imported materials, but you should definitely search for bug there
Intuos
April 29, 2026, 12:37pm
8
Whenever I have an obscure baking issue, one of the main symptoms is the order/ number of items changing in a tree, so when branches change item numbers, that usually tells you something is amiss.
Piotr
April 29, 2026, 12:46pm
9
You are correct, but I have checked the output structure multiple times.
Baking branch 9 with multiple materials gives me trouble:
Each object has it’s own name, colour and material.
This one is much simpler and bakes ok
Intuos
April 29, 2026, 12:54pm
10
Maybe check if one of the objects disappears or if a duplicate is present? Hard to diagnose without test files.
Intuos
April 29, 2026, 12:58pm
11
Further down my file there’s also this Purge component that’s misbehaving like crazy:
I was thinking I could assign timestamps to filter out the older set of objects, but if
Content Cache isn’t purging then I’m at a loss for workarounds.
Piotr
April 29, 2026, 1:17pm
12
No missing objects or materials, no nulls or empties, still doubled output.
Intuos
April 29, 2026, 1:20pm
13
Do you have a small test file?
Piotr
April 29, 2026, 1:24pm
14
Small test file with simplified materials outputs correctly.
Only the complex scene with imported stuff with it’s own materials causes trouble. I spent hours trying to create reasonable sample. This is why I know it comes from material tab.
Intuos
April 29, 2026, 1:24pm
15
Are you using multiple Content Caches that act in a sequence?
Piotr
April 29, 2026, 1:30pm
16
Everything bakes at once.
Intuos
April 29, 2026, 1:34pm
17
Why does {9} have multiple items?
Piotr
April 29, 2026, 1:42pm
18
It’s just bunch of different elements.
Now, this is bizarre.
Bake first time from GH - everything is doubled.
Delete the model, bake again - everything comes x1.
This, certainly, has nothing to do with the tree structure.
Japhy
(Japhy)
April 29, 2026, 2:59pm
19
Hi Piotr,
Trying to remove some of the variables, do you have any of these installed?
Wombat is as well..