# Fundamentals of Numerical Computation installation issue

**URL:** <https://discourse.julialang.org/t/fundamentals-of-numerical-computation-installation-issue/136969>\
**Category:** Teaching & Outreach\
**Tags:** package\
**Created:** [May 3, 2026, 6:46pm UTC](https://discourse.julialang.org/t/fundamentals-of-numerical-computation-installation-issue/136969 "2026-05-03T18:46:32Z")\
**Posts on this page:** 4\
**Page:** 2

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**Author:** ![kellertuer](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/kellertuer/32/220707_2.png) [@kellertuer](https://discourse.julialang.org/u/kellertuer)\
**Post date:** [May 4, 2026, 3:13pm UTC](https://discourse.julialang.org/t/fundamentals-of-numerical-computation-installation-issue/136969/21 "2026-05-04T15:13:43Z")

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Thanks for your kind words.  
I am not sure I (or my packages I feel responsibility for) are the actual cause for your textbook to error, but still I have not yet understood what happened here and whether I could have helped avoiding it in the first place.

I think in general Pkg is very nice and easy to use. I personally do not often run into “dependency hell” or precompilation errors.

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**Author:** ![Pat\_C](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/pat_c/32/221763_2.png) [@Pat\_C](https://discourse.julialang.org/u/Pat_C)\
**Post date:** [May 4, 2026, 5:22pm UTC](https://discourse.julialang.org/t/fundamentals-of-numerical-computation-installation-issue/136969/22 "2026-05-04T17:22:05Z")

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Hi all,

Sorry, I’ve been unable to comment until now as I’ve been away from my computer until now. Thank you for your contributions. @kellertuer, apologies for the frustration and the doubting of the worth of your contribution my post has caused. I’m sure the community appreciates greatly your work.

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**Author:** ![Pat\_C](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/pat_c/32/221763_2.png) [@Pat\_C](https://discourse.julialang.org/u/Pat_C)\
**Post date:** [May 4, 2026, 5:34pm UTC](https://discourse.julialang.org/t/fundamentals-of-numerical-computation-installation-issue/136969/23 "2026-05-04T17:34:06Z")

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@tobydriscoll, thank you for your offer of assistance on this matter. I would appreciate your walking me through instantiating the Project file by email.

To be honest, I’m not a student, I just don’t use Julia [_all that much_] and _[know very little in the grand scheme of things about_] scientific computing and I’m not a computer whizz, but I’d like to learn more about scientific computing and numerical methods [- _I know basic numerical methods and have supervised some small projects in a previous employment role that used Python, NumPy and SciPy_] . I’d previously installed Julia 1.11.5 before and added an older version 1.10.? and installed FundamentalsNumericalComputation and things generally seemed to work and then I left it for months and updated Julia. And things didn’t work anymore.

So, I’m guessing now I’ll just install Julia 1.12.6, create a fresh environment, add FNCFunctions, and all the dependencies for the demos too?

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**Author:** ![ChrisRackauckas](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/chrisrackauckas/32/77_2.png) [@ChrisRackauckas](https://discourse.julialang.org/u/ChrisRackauckas)\
**Post date:** [May 5, 2026, 4:44pm UTC](https://discourse.julialang.org/t/fundamentals-of-numerical-computation-installation-issue/136969/24 "2026-05-05T16:44:47Z")

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Both the older versions and the updated versions should be good now? At least as of the PRs of the week and the registry fixes.

[Previous page](https://discourse.julialang.org/t/fundamentals-of-numerical-computation-installation-issue/136969.md?page=1)