# Additive Anim Type and Morph Targets are not working

**URL:** <https://forums.unrealengine.com/t/additive-anim-type-and-morph-targets-are-not-working/356404>\
**Category:** Character & Animation\
**Tags:** morph-targets, unreal-engine, bug-report, question\
**Created:** [May 4, 2016, 9:24am UTC](https://forums.unrealengine.com/t/additive-anim-type-and-morph-targets-are-not-working/356404 "2016-05-04T09:24:28Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![anonymous\_user\_b3dc0679](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_b3dc0679](https://forums.unrealengine.com/u/anonymous_user_b3dc0679)\
**Post date:** [May 4, 2016, 9:24am UTC](https://forums.unrealengine.com/t/additive-anim-type-and-morph-targets-are-not-working/356404/1 "2016-05-04T09:24:28Z")

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After switching to UE 4.12 Preview, Animations containing Morph Curves are not correctly driving the Morph Targets of Skeletal Characters when set to “Additive Anim Type: Local Space/Mesh Space”

They work correctly in 4.11 and also when set to “Additive Anim Type: No additive”

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**Author:** ![anonymous\_user\_280dd372](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_280dd372](https://forums.unrealengine.com/u/anonymous_user_280dd372)\
**Post date:** [May 6, 2016, 7:17pm UTC](https://forums.unrealengine.com/t/additive-anim-type-and-morph-targets-are-not-working/356404/2 "2016-05-06T19:17:02Z")

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Hey F4Q,

Thanks for reporting this. It appears fixed in 4.13, so I’ve reached out to one of our engineers to see if they know what fixed it and to try and get the fix integrated to 4.12.

-.

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**Author:** ![anonymous\_user\_b3dc0679](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_b3dc0679](https://forums.unrealengine.com/u/anonymous_user_b3dc0679)\
**Post date:** [May 10, 2016, 8:32am UTC](https://forums.unrealengine.com/t/additive-anim-type-and-morph-targets-are-not-working/356404/3 "2016-05-10T08:32:51Z")

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Hi ,  
thanks for looking into this.

I have made a few tests with the following behavior:  
When opening a 4.11 project with the 4.12 the first time, the animation works as expected. When opening it for the second time, the animation stops working ever after.

I pulled the master 4.13 from github. It mysteriously shows the same behavior. So opening the project the first time, everything works as expected. Opening it again, prevents the animation from working correctly.

Hope this helps finding the bug.

For your reference I have created a small Testproject.

> **[Google Drive: Sign-in](https://accounts.google.com/v3/signin/identifier?dsh=S805398514%3A1687144743462817&continue=https%3A%2F%2Fdrive.google.com%2Fopen%3Fid%3D0BwbIiqx4W1XnTWFrVUhjU2N0ekk&ffgf=1&followup=https%3A%2F%2Fdrive.google.com%2Fopen%3Fid%3D0BwbIiqx4W1XnTWFrVUhjU2N0ekk&ifkv=Af_xneFU3b2NgMqfLW07lSPTkRMw-I0k8xv7cBAuSyTRy9YO0EcoKhwzt9XTUrPEjt5NPRYRVC1xsA&osid=1&passive=1209600&service=wise&flowName=GlifWebSignIn&flowEntry=ServiceLogin)**
>
> Access Google Drive with a Google account (for personal use) or Google Workspace account (for business use).

This drive folder contains two videos showing the behavior in 4.12 and 4.13 Master.  
Plus 3 miniprojects for 4.11, 4.12 and 4.13.

Each project contains the most simple Skeletal Mesh with one MorphTarget and an additive animation driving that MorphTarget.

Thanks

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<div class="post-metadata">

**Author:** ![anonymous\_user\_280dd372](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_280dd372](https://forums.unrealengine.com/u/anonymous_user_280dd372)\
**Post date:** [May 12, 2016, 9:01pm UTC](https://forums.unrealengine.com/t/additive-anim-type-and-morph-targets-are-not-working/356404/4 "2016-05-12T21:01:01Z")

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Hi F4Q,

I had already created test content for this, but thank you for offering it. Our engineers found a fix and are working on integrating it to 4.12. Thank you for reporting this.

-.

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**Author:** ![anonymous\_user\_280dd372](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_280dd372](https://forums.unrealengine.com/u/anonymous_user_280dd372)\
**Post date:** [May 13, 2016, 2:34pm UTC](https://forums.unrealengine.com/t/additive-anim-type-and-morph-targets-are-not-working/356404/5 "2016-05-13T14:34:30Z")

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Note that the bug is UE-30588 and the fix is now in 4.12 latest (not released yet)