# Error: Could not load z9 key (SOLVED)

**URL:** <https://forum.zcashcommunity.com/t/error-could-not-load-z9-key-solved/12172>\
**Category:** Technical Support\
**Created:** [December 1, 2016, 5:49am UTC](https://forum.zcashcommunity.com/t/error-could-not-load-z9-key-solved/12172 "2016-12-01T05:49:19Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![fible1](https://avatars.discourse-cdn.com/v4/letter/f/ba9def/32.png) [@fible1](https://forum.zcashcommunity.com/u/fible1)\
**Post date:** [December 1, 2016, 5:49am UTC](https://forum.zcashcommunity.com/t/error-could-not-load-z9-key-solved/12172/1 "2016-12-01T05:49:19Z")

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Hi,  
I am getting the error below when trying to run the app, I triple checked zcash.conf and it looks good. Could someone please lend a hand?

EXCEPTION: St13runtime\_error  
could not load param file at /home/fible1/.zcash-params/z9-verifying.key  
Zcash in AppInit()

Pablo.

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**Author:** ![anon47418038](https://avatars.discourse-cdn.com/v4/letter/a/258eb7/32.png) [@anon47418038](https://forum.zcashcommunity.com/u/anon47418038)\
**Post date:** [December 1, 2016, 6:00am UTC](https://forum.zcashcommunity.com/t/error-could-not-load-z9-key-solved/12172/2 "2016-12-01T06:00:43Z")

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Did you run the script to fetch the proving keys? If you build from source, it’ll be ./src/zcutil/fetch-params.sh and if you installed from binaries just run zcash-fetch-params

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**Author:** ![fible1](https://avatars.discourse-cdn.com/v4/letter/f/ba9def/32.png) [@fible1](https://forum.zcashcommunity.com/u/fible1)\
**Post date:** [December 1, 2016, 6:06am UTC](https://forum.zcashcommunity.com/t/error-could-not-load-z9-key-solved/12172/3 "2016-12-01T06:06:14Z")

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Thank you for getting back. I actually found an old forum post about trying with a fresh terminal and that did the trick strangely enough. Good to go now, thank you for taking the time to answer my question :).

Pablo.

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**Author:** ![anon47418038](https://avatars.discourse-cdn.com/v4/letter/a/258eb7/32.png) [@anon47418038](https://forum.zcashcommunity.com/u/anon47418038)\
**Post date:** [December 1, 2016, 6:08am UTC](https://forum.zcashcommunity.com/t/error-could-not-load-z9-key-solved/12172/4 "2016-12-01T06:08:34Z")

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No problem! I’m a volunteer here, but even though I’m not an employee of ZcashCo I do make my living with all kinds of things Zcash related, and helping out beginners is essential to any open source community