# Error 1069 when Tweening 3D on timeline 'property null not found'

**URL:** <https://forum.kirupa.com/t/error-1069-when-tweening-3d-on-timeline-property-null-not-found/300188>\
**Category:** Uncategorized\
**Created:** [November 17, 2009, 12:43pm UTC](https://forum.kirupa.com/t/error-1069-when-tweening-3d-on-timeline-property-null-not-found/300188 "2009-11-17T12:43:43Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![hectors](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/hectors/32/2118_2.png) [@hectors](https://forum.kirupa.com/u/hectors)\
**Post date:** [November 17, 2009, 12:43pm UTC](https://forum.kirupa.com/t/error-1069-when-tweening-3d-on-timeline-property-null-not-found/300188/1 "2009-11-17T12:43:43Z")

</div>

Hi there, I am trying to do a simple 3d tween on the timeline. I am doing this in the simplest way possible but Flash is throwing an error. Here is what I am doing:

-draw a rectangle  
-convert to movieclip  
-right-click and choose ‘create motion tween’  
-select the 3d rotation tool and change the y rotation  
-publish the swf

When I publish the swf I get the error message on every frame:

```php
ReferenceError: Error #1069: Property null not found on fl.motion.KeyframeBase and there is no default value.
	at fl.motion::KeyframeBase/getValue()
	at fl.motion::MotionBase/getValue()
	at fl.motion::Animator3D/setTime3D()
	at fl.motion::AnimatorBase/set time()
	at fl.motion::AnimatorBase$/processCurrentFrame()
	at fl.motion::AnimatorBase$/parentEnterFrameHandler()

```

I’ve searched the forums, have googled extensively but can’t find any answers. There is no code in this project whatsoever and I have restarted my computer in case there was some weird compiler issue.

Any responses / help much appreciated.

Thanks,  
Hectors