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"

Exposing BlendSpace pin on AimOffset Node causes unknown blendspace error

The exact error is: "BlueprintEditorCompileResults:Error: Error AnimGraphNode_RotationOffsetBlendSpace_8 references an unknown blend space"

This error emanates from 'UAnimGraphNode_RotationOffsetBlendSpace::ValidateAnimNodeDuringCompilation' because 'Node.BlendSpace' is NULL.

That property gets set to NULL within this block of code within 'FAnimBlueprintNodeOptionalPinManager::PostInitNewPin':

             if (bIsAnimationAsset)
                 ObjectProperty->SetObjectPropertyValue(PropertyAddress, nullptr);

Clean sample project attached for immediate repro.

Repro steps:

  1. Open Additive Pin Bug project

  2. Open "BugRepro" Animation Blueprint

  3. Note that it is currently in error

  4. Uncheck 'as pin' checkbox for the Blend Space property

  5. Compile that Animation Blueprint. The error goes away when the node is able to use its internally specified Blend Space that is not exposed as a pin.

  6. Check it again to expose the pin

Result: Compile Error comes back. Feeding a variable that matches the blendspace set in the node makes no difference

Expected: For the node to accept Blend Space pin input without compile error

Our goal is to be able to feed a UAimOffsetBlendSpace1D variable into that pin. This works fine for Blendspace Player using nonadditive offsets, but not for UAnimGraphNode_RotationOffsetBlendSpace.

![alt text][1] [link text][2] [1]: /storage/temp/113554-capture.png [2]: /storage/temp/113555-additivepinbug.zip

Product Version: UE 4.13
capture.png (46.5 kB)
more ▼

asked Nov 02 '16 at 09:02 PM in Using UE4

avatar image

Kain Shin
141 3 7 7

avatar image Nightasy Apr 10 '17 at 12:59 AM

Can confirm this bug exists in UE4.14.3. I haven't upgraded to UE4.15 yet. Hopefully they will fix this soon. Kind of a pain in the tookus to work around it. I can live without it for now but eventually I'm gonna need them to have this fixed. Thanks for the attachment. I'd use it but I don't want to commit to anything until Epic has a chance to actually respond to this bug.

(comments are locked)
10|2000 characters needed characters left
Viewable by all users

1 answer: sort voted first

Got a possible fix to this that involves changes to the engine to make UAnimGraphNode_RotationOffsetBlendSpace read pins the same way that UAnimGraphNode_BlendSpacePlayer does.

I attached those fixes as a zip to this post. Please let me know if these get integrated into the engine. I'd rather have Epic's official fix than have to manage another engine mod whenever I pull down new versions.

Edit: Looks like this was not addressed in 4.15. I've updated my fix for 4.15 making it very easy to diff and replaced the original attachment with the 4.15 version.

more ▼

answered Nov 03 '16 at 01:55 AM

avatar image

Kain Shin
141 3 7 7

avatar image Amimoller Mar 20 '17 at 09:16 AM

Yeah can we please get this in the engine?, we really need this.

avatar image RossenX Mar 26 '17 at 03:07 PM

Phew, well you just saved me a massive headache. I hope this is officially addressed in the engine soon.

(comments are locked)
10|2000 characters needed characters left
Viewable by all users
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