# Thunkable Companion always crashing on creating a list

**URL:** <https://community.thunkable.com/t/thunkable-companion-always-crashing-on-creating-a-list/362437>\
**Category:** Questions about Thunkable X\
**Created:** [December 11, 2019, 5:41pm UTC](https://community.thunkable.com/t/thunkable-companion-always-crashing-on-creating-a-list/362437 "2019-12-11T17:41:57Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Chris](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/chris/32/78883_2.png) [@Chris](https://community.thunkable.com/u/Chris)\
**Post date:** [December 11, 2019, 5:41pm UTC](https://community.thunkable.com/t/thunkable-companion-always-crashing-on-creating-a-list/362437/1 "2019-12-11T17:41:57Z")

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Hi,

I want to create a list containing data (985 items) extracted from a json. I use the following blocks to generate a list with objects but the companion will 1) take really long to do this and 2) it just crashes when I put a higher number of list items ☹ this is really frustrating… Even when I just put 450 it might work once and crash the next time 🙄

 ![Bildschirmfoto 2019-12-11 um 18.30.12](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/0/f/0fc464d1d51243888f4c1f92de5d1f4c3703393f.png)

Best, Chris

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**Author:** ![actech](https://avatars.discourse-cdn.com/v4/letter/a/3d9bf3/32.png) [@actech](https://community.thunkable.com/u/actech)\
**Post date:** [December 11, 2019, 6:29pm UTC](https://community.thunkable.com/t/thunkable-companion-always-crashing-on-creating-a-list/362437/2 "2019-12-11T18:29:34Z")

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Hi,

If you give me a link to the application, then I will look at it.

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**Author:** ![CBVG](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/cbvg/32/32401_2.png) [@CBVG](https://community.thunkable.com/u/CBVG)\
**Post date:** [December 11, 2019, 10:03pm UTC](https://community.thunkable.com/t/thunkable-companion-always-crashing-on-creating-a-list/362437/3 "2019-12-11T22:03:23Z")

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Just a quick question here.  
Why do you create a list that essentially duplicates the data that is already stored in your AED\_Data variable?  
Given that you are most likely reaching the limits of what X can handle gracefully in terms of memory, that duplication is essentially compounding your problem.

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**Author:** ![ioannis](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/ioannis/32/146956_2.png) [@ioannis](https://community.thunkable.com/u/ioannis)\
**Post date:** [November 8, 2024, 11:46am UTC](https://community.thunkable.com/t/thunkable-companion-always-crashing-on-creating-a-list/362437/4 "2024-11-08T11:46:23Z")

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