# Unable to spawn neuron in NNS App (with Ledger device)

**URL:** <https://forum.dfinity.org/t/unable-to-spawn-neuron-in-nns-app-with-ledger-device/12789>\
**Category:** Developers\
**Created:** [May 8, 2022, 12:34am UTC](https://forum.dfinity.org/t/unable-to-spawn-neuron-in-nns-app-with-ledger-device/12789 "2022-05-08T00:34:58Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![amircryptola1](https://avatars.discourse-cdn.com/v4/letter/a/e495f1/32.png) [@amircryptola1](https://forum.dfinity.org/u/amircryptola1)\
**Post date:** [May 8, 2022, 12:34am UTC](https://forum.dfinity.org/t/unable-to-spawn-neuron-in-nns-app-with-ledger-device/12789/1 "2022-05-08T00:34:59Z")

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Is anyone else having trouble spawning a new neuron? I’ve never had trouble doing this before until the new feature was added to choose the % of maturity to spawn in a new neuron.

My screen gets stuck at the following:

 ![image](https://us1.discourse-cdn.com/flex023/uploads/dfn/original/2X/9/9af33af54ffee25d1a132404733940fc13eddba6.png)

Is this a known issue?

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**Author:** ![amircryptola1](https://avatars.discourse-cdn.com/v4/letter/a/e495f1/32.png) [@amircryptola1](https://forum.dfinity.org/u/amircryptola1)\
**Post date:** [May 8, 2022, 12:39am UTC](https://forum.dfinity.org/t/unable-to-spawn-neuron-in-nns-app-with-ledger-device/12789/2 "2022-05-08T00:39:31Z")

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Note: I have my ledger connected as I normally do. I’ve done this process dozens of times but never run into an issue. I’m spawning about 1.7 ICP.

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**Author:** ![Ang](https://avatars.discourse-cdn.com/v4/letter/a/958977/32.png) [@Ang](https://forum.dfinity.org/u/Ang)\
**Post date:** [May 8, 2022, 12:46am UTC](https://forum.dfinity.org/t/unable-to-spawn-neuron-in-nns-app-with-ledger-device/12789/3 "2022-05-08T00:46:29Z")

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Yes this is a known issue. There is a bug caused by a recent update, and a fix is currently in the process of being developed. Please see here for more details: [https://www.reddit.com/r/dfinity/comments/uj8fzm/new\_problem\_spawn\_neuron\_ledger\_nano/](https://www.reddit.com/r/dfinity/comments/uj8fzm/new_problem_spawn_neuron_ledger_nano/)

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**Author:** ![amircryptola1](https://avatars.discourse-cdn.com/v4/letter/a/e495f1/32.png) [@amircryptola1](https://forum.dfinity.org/u/amircryptola1)\
**Post date:** [May 8, 2022, 12:53am UTC](https://forum.dfinity.org/t/unable-to-spawn-neuron-in-nns-app-with-ledger-device/12789/4 "2022-05-08T00:53:38Z")

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Thank you for letting me know

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**Author:** ![anon98822045](https://avatars.discourse-cdn.com/v4/letter/a/ce73a5/32.png) [@anon98822045](https://forum.dfinity.org/u/anon98822045)\
**Post date:** [May 8, 2022, 6:42am UTC](https://forum.dfinity.org/t/unable-to-spawn-neuron-in-nns-app-with-ledger-device/12789/5 "2022-05-08T06:42:34Z")

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Thankfully the fix doesn’t rely on Ledger updating their IC app, or you’d be waiting till 2038.