# GUI error

**URL:** <https://forum.defold.com/t/gui-error/75141>\
**Category:** Questions\
**Created:** [November 29, 2023, 3:21pm UTC](https://forum.defold.com/t/gui-error/75141 "2023-11-29T15:21:41Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![TScriv](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/tscriv/32/34163_2.png) [@TScriv](https://forum.defold.com/u/TScriv)\
**Post date:** [November 29, 2023, 3:21pm UTC](https://forum.defold.com/t/gui-error/75141/1 "2023-11-29T15:21:42Z")

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I’m trying to make a game for my A-level computer science project and I’ve started making the GUI but I get this error when I try to press the buttons.

 ![image](https://forum-defold-uploads.b-cdn.net/original/3X/0/e/0e960d55334d9cc77f2eddd557139c3a7ba9b680.png)  
Would someone please point me in the right direction on how to fix this? Thanks.

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**Author:** ![AGulev](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/agulev/32/4541_2.png) [@AGulev](https://forum.defold.com/u/AGulev)\
**Post date:** [November 29, 2023, 3:30pm UTC](https://forum.defold.com/t/gui-error/75141/2 "2023-11-29T15:30:07Z")

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You have two collection proxies with the same name.  
The name of the collection proxy isn’t the name of a file on disk, but name in properties of the collection:

 ![image](https://forum-defold-uploads.b-cdn.net/original/3X/b/8/b80770f4136e4f3a72a1fa55b516ae0f881d09da.png)

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<div class="post-metadata">

**Author:** ![TScriv](https://forum-defold.b-cdn.net/user_avatar/forum.defold.com/tscriv/32/34163_2.png) [@TScriv](https://forum.defold.com/u/TScriv)\
**Post date:** [November 29, 2023, 3:35pm UTC](https://forum.defold.com/t/gui-error/75141/3 "2023-11-29T15:35:46Z")

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Thank you so much