title: Plots.jl Precompile fails using Julia v1.5.1 under Windows 2012 R2
body: <p>Just installed Julia v1.5.1 under Windows 2012 R2.  Get similar error to what was reported here:
  <a href="https://stackoverflow.com/questions/63784372/i-got-a-message-using-plots-in-julia-and-i-do-no-how-to-resolve-it">I got a message &quot;using Plots&quot; in Julia and I do no how to resolve it</a></p>
  <p>If I follow the steps seen here for <em>MacOS Catalina</em> :
  <a href="https://github.com/JuliaLang/julia/issues/36893" rel="nofollow noreferrer">https://github.com/JuliaLang/julia/issues/36893</a></p>
  <p>to rollback  to x264_jll@2019.5.25</p>
  <p>then the precompile of Plots will succeed,as seen below. Thinking I maybe needed FFMPEG DLL files, I downloaded latest Windows binary (Shared linking!) from <a href="https://ffmpeg.zeranoe.com/builds/" rel="nofollow noreferrer">https://ffmpeg.zeranoe.com/builds/</a> and added that \bin\ path to my System PATH and restarted. Folder contains avcodec-58.dll, the DLL reported as missing.  Still get the error as seen below.</p>
  <p>I worry I'll apply an update to packages that will break this at some point.  Is there a fix to make this work with latest version of x264_jll?</p>
  <pre><code>               _
     _       _ _(_)_     |  Documentation: https://docs.julialang.org
    (_)     | (_) (_)    |
     _ _   _| |_  __ _   |  Type &quot;?&quot; for help, &quot;]?&quot; for Pkg help.
    | | | | | | |/ _` |  |
    | | |_| | | | (_| |  |  Version 1.5.1 (2020-08-25)
   _/ |\__'_|_|_|\__'_|  |  Official https://julialang.org/ release
  |__/                   |
  
  (@v1.5) pkg&gt; status
  Status `C:\Users\jort\.julia\environments\v1.5\Project.toml`
    [91a5bcdd] Plots v1.6.3
    [1270edf5] x264_jll v2020.7.14+1
  
  julia&gt; using Plots
  [ Info: Precompiling Plots [91a5bcdd-55d7-5caf-9e0b-520d859cae80]
  ERROR: LoadError: InitError: could not load library &quot;C:\Users\jort\.julia\artifa
  cts\7350a6401f1c0d38cc3518193083bc4f83adfe99\bin\avcodec-58.dll&quot;
  The specified module could not be found.
  Stacktrace:
   [1] dlopen(::String, ::UInt32; throw_error::Bool) at D:\buildbot\worker\package
  _win64\build\usr\share\julia\stdlib\v1.5\Libdl\src\Libdl.jl:109
   [2] dlopen at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.
  5\Libdl\src\Libdl.jl:109 [inlined] (repeats 2 times)
   [3] __init__() at C:\Users\jort\.julia\packages\FFMPEG_jll\w0b7h\src\wrappers\x
  86_64-w64-mingw32.jl:234
   [4] _include_from_serialized(::String, ::Array{Any,1}) at .\loading.jl:697
   [5] _require_from_serialized(::String) at .\loading.jl:749
   [6] _require(::Base.PkgId) at .\loading.jl:1040
   [7] require(::Base.PkgId) at .\loading.jl:928
   [8] require(::Module, ::Symbol) at .\loading.jl:923
   [9] include(::Function, ::Module, ::String) at .\Base.jl:380
   [10] include(::Module, ::String) at .\Base.jl:368
   [11] top-level scope at none:2
   [12] eval at .\boot.jl:331 [inlined]
   [13] eval(::Expr) at .\client.jl:467
   [14] top-level scope at .\none:3
  during initialization of module FFMPEG_jll
  in expression starting at C:\Users\jort\.julia\packages\FFMPEG\aazvf\src\FFMPEG.
  jl:3
  ERROR: LoadError: Failed to precompile FFMPEG [c87230d0-a227-11e9-1b43-d7ebe4e75
  70a] to C:\Users\jort\.julia\compiled\v1.5\FFMPEG\TGvga_Ve7jx.ji.
  Stacktrace:
   [1] error(::String) at .\error.jl:33
   [2] compilecache(::Base.PkgId, ::String) at .\loading.jl:1305
   [3] _require(::Base.PkgId) at .\loading.jl:1030
   [4] require(::Base.PkgId) at .\loading.jl:928
   [5] require(::Module, ::Symbol) at .\loading.jl:923
   [6] include(::Function, ::Module, ::String) at .\Base.jl:380
   [7] include(::Module, ::String) at .\Base.jl:368
   [8] top-level scope at none:2
   [9] eval at .\boot.jl:331 [inlined]
   [10] eval(::Expr) at .\client.jl:467
   [11] top-level scope at .\none:3
  in expression starting at C:\Users\jort\.julia\packages\Plots\M1wcx\src\Plots.jl
  :15
  ERROR: Failed to precompile Plots [91a5bcdd-55d7-5caf-9e0b-520d859cae80] to C:\U
  sers\jort\.julia\compiled\v1.5\Plots\ld3vC_Ve7jx.ji.
  Stacktrace:
   [1] error(::String) at .\error.jl:33
   [2] compilecache(::Base.PkgId, ::String) at .\loading.jl:1305
   [3] _require(::Base.PkgId) at .\loading.jl:1030
   [4] require(::Base.PkgId) at .\loading.jl:928
   [5] require(::Module, ::Symbol) at .\loading.jl:923
  
  (@v1.5) pkg&gt; add x264_jll@2019.5.25
     Updating registry at `C:\Users\jort\.julia\registries\General`
    Resolving package versions...
  Updating `C:\Users\jort\.julia\environments\v1.5\Project.toml`
    [1270edf5] ↓ x264_jll v2020.7.14+1 ? v2019.5.25+2
  Updating `C:\Users\jort\.julia\environments\v1.5\Manifest.toml`
    [c87230d0] ↓ FFMPEG v0.4.0 ? v0.3.0
    [b22a6f82] ↓ FFMPEG_jll v4.3.1+2 ? v4.1.0+3
    [1270edf5] ↓ x264_jll v2020.7.14+1 ? v2019.5.25+2
  
  (@v1.5) pkg&gt; status
  Status `C:\Users\jort\.julia\environments\v1.5\Project.toml`
    [91a5bcdd] Plots v1.6.3
    [1270edf5] x264_jll v2019.5.25+2
  
  julia&gt; using Plots
  [ Info: Precompiling Plots [91a5bcdd-55d7-5caf-9e0b-520d859cae80]
  
  julia&gt;
  </code></pre>