# ExampleSysimage The specified module could not be found
**URL:** https://discourse.julialang.org/t/examplesysimage-the-specified-module-could-not-be-found/87039
**Category:** General Usage
**Tags:** question, package-compiler
**Created:** [September 10, 2022, 2:38pm UTC](https://discourse.julialang.org/t/examplesysimage-the-specified-module-could-not-be-found/87039 "2022-09-10T14:38:34Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@AbhimanyuAryan](https://discourse.julialang.org/u/AbhimanyuAryan)
#### Post date: [September 10, 2022, 2:38pm UTC](https://discourse.julialang.org/t/examplesysimage-the-specified-module-could-not-be-found/87039/1 "2022-09-10T14:38:34Z")
I compiled a sys image from guide given here: [Sysimages · PackageCompiler](https://julialang.github.io/PackageCompiler.jl/stable/sysimages.html#What-is-a-sysimage)
```julia
julia> versioninfo()
Julia Version 1.8.0
Commit 5544a0fab7 (2022-08-17 13:38 UTC)
Platform Info:
OS: Windows (x86_64-w64-mingw32)
CPU: 16 × AMD Ryzen 7 5800H with Radeon Graphics
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-13.0.1 (ORCJIT, znver3)
Threads: 1 on 16 virtual cores
```
Generated the system image
```julia
julia> readdir()
3-element Vector{String}:
"ExampleSysimage.so"
"Manifest.toml"
"Project.toml"
```
but can’t really run it using the command provided
```julia
[19:59:36] ~\..\NewSysImageEnv on❯ julia -q -JExampleSysimage.so
ERROR: could not load library "C:\Users\aryan\Documents\NewSysImageEnv\ExampleSysimage"
The specified module could not be found.
```
---
### Author:  [@garrek](https://discourse.julialang.org/u/garrek)
#### Post date: [October 21, 2022, 4:01am UTC](https://discourse.julialang.org/t/examplesysimage-the-specified-module-could-not-be-found/87039/2 "2022-10-21T04:01:14Z")
Has anyone been able to solve this? I am trying to get PackageCompiler to work on my machine and run into the same issue. I thought it had to do with package dependencies not being properly installed, but even following the example [in the documentation](https://julialang.github.io/PackageCompiler.jl/stable/sysimages.html#Creating-a-sysimage-using-PackageCompiler) in a fresh environment fails in the same way as it is for @AbhimanyuAryan. I can’t get it to work on either a Windows 11 machine or my Mac.
I have found that this has been an issue in the past ([issue#207](https://github.com/JuliaLang/PackageCompiler.jl/issues/207)), but it seems like it has been fixed at some point. Maybe something isn’t configured right in my environment or the documentation doesn’t reflect the current syntax?
---
### Author:  [@Krastanov](https://discourse.julialang.org/u/Krastanov)
#### Post date: [October 21, 2022, 4:16am UTC](https://discourse.julialang.org/t/examplesysimage-the-specified-module-could-not-be-found/87039/3 "2022-10-21T04:16:39Z")
This is not a great answer to your question, mainly because I have not followed the tutorial you used and can not help debug it, but: have you tried other more “automated” tools for making sysimages?
I prefer VScode’s plugin for it: [Compiling Sysimages · Julia in VS Code](https://www.julia-vscode.org/docs/stable/userguide/compilesysimage/)
Here I show how it turns TTFX from more than a minute to 3 seconds: [Very slow time to first plot, 2022 - #46 by Krastanov](https://discourse.julialang.org/t/very-slow-time-to-first-plot-2022/88968/46)
---
### Author:  [@garrek](https://discourse.julialang.org/u/garrek)
#### Post date: [October 24, 2022, 11:53pm UTC](https://discourse.julialang.org/t/examplesysimage-the-specified-module-could-not-be-found/87039/4 "2022-10-24T23:53:29Z")
Thanks for the suggestion. It took a little while for me to get it up and running correctly (needed to make sure `useCustomSysimage` was check in VSCode), but it works very well. I’m getting something like a 2.5x speed-up when including files in a script that uses CairoMakie and GLMakie. A huge improvement. TTFP is also better. I will absolutely be using this.
---
### Author:  [@gil-ribeiro](https://discourse.julialang.org/u/gil-ribeiro)
#### Post date: [September 21, 2023, 8:53am UTC](https://discourse.julialang.org/t/examplesysimage-the-specified-module-could-not-be-found/87039/5 "2023-09-21T08:53:23Z")
Hello!
Have been developing some packages in house with a student team and am currently having the same issue. I would love to get the PackageCompiler.jl workflow working rather than resorting to other methods if possible. Any new ideas please?
**Version info**
julia version 1.8.5
(@v1.8) pkg\> st PackageCompiler
Status `C:\Users\cgilb\.julia\environments\v1.8\Project.toml`
[9b87118b] PackageCompiler v2.1.9
**Packages in project**
All our own code and nothing yet published to a public registry/GitHub
Thank you very much!