# Component Import Fail

**URL:** <https://forums.unrealengine.com/t/component-import-fail/340041>\
**Category:** Blueprint\
**Tags:** unreal-engine, bug-report, UE4, Blueprint, CPP, question\
**Created:** [November 29, 2015, 7:55pm UTC](https://forums.unrealengine.com/t/component-import-fail/340041 "2015-11-29T19:55:51Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![queelaga](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@queelaga](https://forums.unrealengine.com/u/queelaga)\
**Post date:** [November 29, 2015, 7:55pm UTC](https://forums.unrealengine.com/t/component-import-fail/340041/1 "2015-11-29T19:55:51Z")

</div>

OS: Windows 10, Branch: Binary.

Problem:  
I have a Parent\_Blueprint derived from a C++ class(Custom AActor class) and two Child\_Blueprints derived from Parent\_Blueprint. The Parent\_BP contains several components, added via C++, among others 3 sphere components and 2 custom actor components.

Now I have added a new custom scene component to Parent\_BP the same way as before, and at first eveything works fine. But when I close the editor and reopen it I get the error message that my components failed to import on my two Child\_BPs inside the level. The error message does not appear when I remove all Child\_BPs from the map, also placing only Parent\_BPs on the map works fine. If the error message is shown, the new component does nothing(but can be seen and edited on the BPs).

I found out that the error message occurs(on reload) as soon as I place a reference to the new component inside Parent\_BP event graph. I also managed to work around this issue by placing a reference to said component inside the 2 Child\_BP’s event graph, which got rid of the error message and made everything work fine(also deleting the references in Child\_BP after placing them once was ok).

---

<div class="post-metadata">

**Author:** ![Sean\_Flint](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Sean\_Flint](https://forums.unrealengine.com/u/Sean_Flint)\
**Post date:** [December 2, 2015, 7:00pm UTC](https://forums.unrealengine.com/t/component-import-fail/340041/2 "2015-12-02T19:00:25Z")

</div>

Hello,

I have been able to reproduce your issue, and have entered a bug report (UE-24043). Thank you for your report. Also, I have verified that your workaround is feasible for now until this issue has been addressed.

Have a great day,

Sean Flint