# Why is it so difficult to load a swf inside another?

**URL:** <https://forum.kirupa.com/t/why-is-it-so-difficult-to-load-a-swf-inside-another/318363>\
**Category:** flash\
**Created:** [January 18, 2011, 5:37am UTC](https://forum.kirupa.com/t/why-is-it-so-difficult-to-load-a-swf-inside-another/318363 "2011-01-18T05:37:18Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![jac4b](https://avatars.discourse-cdn.com/v4/letter/j/8491ac/32.png) [@jac4b](https://forum.kirupa.com/u/jac4b)\
**Post date:** [January 18, 2011, 5:37am UTC](https://forum.kirupa.com/t/why-is-it-so-difficult-to-load-a-swf-inside-another/318363/1 "2011-01-18T05:37:18Z")

</div>

I get all kinds of errors, like:

```auto
ReferenceError: Error #1065: Variable flash.geom::Matrix3D is not defined.
	at test998_fla::MainTimeline()
TypeError: Error #1009: Cannot access a property or method of a null object reference.
	at test998_fla::MainTimeline/initialize()
	at test998_fla::MainTimeline/frame1()

```

If a swf works by itself shouldn’t it work inside another swf?