Search in
Sort by:

Question Status:

Search help

  • Simple searches use one or more words. Separate the words with spaces (cat dog) to search cat,dog or both. Separate the words with plus signs (cat +dog) to search for items that may contain cat but must contain dog.
  • You can further refine your search on the search results page, where you can search by keywords, author, topic. These can be combined with each other. Examples
    • cat dog --matches anything with cat,dog or both
    • cat +dog --searches for cat +dog where dog is a mandatory term
    • cat -dog -- searches for cat excluding any result containing dog
    • [cats] —will restrict your search to results with topic named "cats"
    • [cats] [dogs] —will restrict your search to results with both topics, "cats", and "dogs"

Hierarchical instanced static mesh component crashing after upgrade to 4.12

After project was upgraded to 4.12 opening a blueprint that contains Hierarchical Instanced Static Mesh component will result in a crash. From the log I this is the important part:

 Assertion failed: InComponent->InstanceReorderTable.Num() == InComponent->PerInstanceSMData.Num() [File:D:\Build\++UE4+Release-4.12+Compile\Sync\Engine\Source\Runtime\Engine\Private\HierarchicalInstancedStaticMesh.cpp] [Line: 756] 

Removing the component before upgrade will fix the problem. I re-added the component and re-set the nodes exactly like they were and everything works now.

Product Version: UE 4.12
more ▼

asked Jun 07 '16 at 07:51 AM in Bug Reports

avatar image

35 1 4 6

(comments are locked)
10|2000 characters needed characters left

1 answer: sort voted first

Hi, thanks for the bug report report. I've entered ticket UE-31702 to fix the issue. Is the content small enough to upload? An easy reproduction case would be very helpful if you have one.

Thanks Jack

more ▼

answered Jun 07 '16 at 09:20 AM

avatar image

1.3k 37 11 47

avatar image Jaatuli Jun 07 '16 at 10:37 AM

The content is quite big, but the blueprint is basically a crane that add/removes chain links when moving down/up.

alt text

Component settings are default except for selecting the link mesh and setting collision to nocollision.

If you can't replicate the the bug, I'll try to create a test project at some point when I have the time.

instancedmesh.png (266.8 kB)
avatar image Gareth Martin STAFF Jun 08 '16 at 01:36 PM

I have tried to reproduce this with a simple blueprint which adds an instance in its construction script, but it opened fine in 4.12.

Would you be able to upload a cut-down version of your 4.11 project we could reproduce it with?

avatar image Jaatuli Jun 10 '16 at 09:23 AM

Can you give me a email address? I need to give specific access, since the content is confidential.

avatar image Gareth Martin STAFF Jun 10 '16 at 09:33 AM

gareth dot martin at epicgames dot com

Please include a link to this thread in the email.


avatar image Jaatuli Jun 10 '16 at 09:52 AM

Hi, I sent you the link. I cannot add the link unless I force everyone to register to OneDrive with the email given.

Crash will occur when opening the BP_AutoCrane

avatar image Gareth Martin STAFF Jun 10 '16 at 10:15 AM

Thanks! I've received it and attached it to our internal bug report. I'll take a look at it as soon as I can.

It's so much easier to fix when I have a repro project :)

avatar image Gareth Martin STAFF Jun 10 '16 at 06:24 PM

Thanks very much I got a chance to look into it today and it should be fixed for 4.12.3!

(comments are locked)
10|2000 characters needed characters left
Your answer
toggle preview:

Up to 5 attachments (including images) can be used with a maximum of 5.2 MB each and 5.2 MB total.

Follow this question

Once you sign in you will be able to subscribe for any updates here

Answers to this question