# Error: Template Mismatch during attachment. Attaching instanced component to template component

**URL:** <https://forums.unrealengine.com/t/error-template-mismatch-during-attachment-attaching-instanced-component-to-template-component/426596>\
**Category:** Programming & Scripting\
**Tags:** unreal-engine\
**Created:** [June 3, 2018, 6:42pm UTC](https://forums.unrealengine.com/t/error-template-mismatch-during-attachment-attaching-instanced-component-to-template-component/426596 "2018-06-03T18:42:41Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![MIkasa1009](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/mikasa1009/32/471575_2.png) [@MIkasa1009](https://forums.unrealengine.com/u/MIkasa1009)\
**Post date:** [May 29, 2023, 9:30am UTC](https://forums.unrealengine.com/t/error-template-mismatch-during-attachment-attaching-instanced-component-to-template-component/426596/3 "2023-05-29T09:30:44Z")

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I ran into the same problem because I changed the dependencies of the components in the C++ code. This was not a problem with the code, but because the UE4 engine did not properly reload all inherited blueprint classes. You can fix this by manually reloading the faulty blueprint classes

 ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/6/1/2/612757fcbc1e09f57ddcf787f82483b5ec68e3d9.png)

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