# JuMP installation issue in Julia v1.6

**URL:** <https://discourse.julialang.org/t/jump-installation-issue-in-julia-v1-6/58721>\
**Category:** Optimization (Mathematical)\
**Tags:** package, jump\
**Created:** [April 6, 2021, 11:03pm UTC](https://discourse.julialang.org/t/jump-installation-issue-in-julia-v1-6/58721 "2021-04-06T23:03:28Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![erans](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/erans/32/22032_2.png) [@erans](https://discourse.julialang.org/u/erans)\
**Post date:** [April 7, 2021, 9:52am UTC](https://discourse.julialang.org/t/jump-installation-issue-in-julia-v1-6/58721/7 "2021-04-07T09:52:32Z")

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> [@odow](#):
>
> Problems can arise if you instantiate a Julia 1.6 environment in a folder containing a Manifest from Julia 1.5.

Interesting. This is infact exactly what I did following this thread:

> [@Julia v1.1.0 has been released](https://discourse.julialang.org/t/julia-v1-1-0-has-been-released/19911/4):
>
> Note that if you want to keep the same packages as in 1.0 you can copy (or rename if you are no longer using julia 1.0) the .julia/environments/v1.0 folder to .julia/environments/v1.1.

Is the problem then that I not only copied but then also ran:

```julia
@v1.6 pkg> instantiate

```

If that’s the case, what is the correct way to transfer packages from the base environment of one version to the next?

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_[View the full topic](https://discourse.julialang.org/t/jump-installation-issue-in-julia-v1-6/58721)._