Julia v1.4 failed to precompile plots on windows 7 x64

[fhkm]

I have a clean install of Julia v1.4 on windows 7.
I was unable to create any plot. Please see the error message below.

julia> using Plots
[ Info: Precompiling Plots [91a5bcdd-55d7-5caf-9e0b-520d859cae80]
ERROR: LoadError: LoadError: InitError: could not load library "C:\Users[user-name].j
ulia\artifacts\8cd86f24947687d38f279aaceeb1970ff65183c4\bin\libbz2-1.dll"
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\v1.4\Libdl\src\Libdl.jl:109
[2] dlopen at D:\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.
4\Libdl\src\Libdl.jl:109 [inlined] (repeats 2 times)
[3] init() at C:\Users[user-name].julia\packages\Bzip2_jll\MUgvY\src\wrappers\x8
6_64-w64-mingw32.jl:37
[4] _include_from_serialized(::String, ::Array{Any,1}) at .\loading.jl:697
[5] _require_search_from_serialized(::Base.PkgId, ::String) at .\loading.jl:781

[6] _require(::Base.PkgId) at .\loading.jl:1006
[7] require(::Base.PkgId) at .\loading.jl:927
[8] require(::Module, ::Symbol) at .\loading.jl:922
[9] include(::Module, ::String) at .\Base.jl:377
[10] include(::String) at C:\Users[user-name].julia\packages\FreeType2_jll\SETsF\src
\FreeType2_jll.jl:1
[11] top-level scope at C:\Users[user-name].julia\packages\FreeType2_jll\SETsF\src\F
reeType2_jll.jl:50
[12] include(::Module, ::String) at .\Base.jl:377
[13] top-level scope at none:2
[14] eval at .\boot.jl:331 [inlined]
[15] eval(::Expr) at .\client.jl:449
[16] top-level scope at .\none:3
during initialization of module Bzip2_jll
in expression starting at C:\Users[user-name].julia\packages\FreeType2_jll\SETsF\src
wrappers\x86_64-w64-mingw32.jl:4
in expression starting at C:\Users[user-name].julia\packages\FreeType2_jll\SETsF\src
FreeType2_jll.jl:43
ERROR: LoadError: LoadError: Failed to precompile FreeType2_jll [d7e528f0-a631-5
988-bf34-fe36492bcfd7] to C:\Users[user-name].julia\compiled\v1.4\FreeType2_jll\AzWNe
_whFRm.ji.
Stacktrace:
[1] error(::String) at .\error.jl:33
[2] compilecache(::Base.PkgId, ::String) at .\loading.jl:1272
[3] _require(::Base.PkgId) at .\loading.jl:1029
[4] require(::Base.PkgId) at .\loading.jl:927
[5] require(::Module, ::Symbol) at .\loading.jl:922
[6] include(::Module, ::String) at .\Base.jl:377
[7] include(::String) at C:\Users[user-name].julia\packages\libass_jll\Ty9Kb\src\lib
ass_jll.jl:1
[8] top-level scope at C:\Users[user-name].julia\packages\libass_jll\Ty9Kb\src\libas
s_jll.jl:50
[9] include(::Module, ::String) at .\Base.jl:377
[10] top-level scope at none:2
[11] eval at .\boot.jl:331 [inlined]
[12] eval(::Expr) at .\client.jl:449
[13] top-level scope at .\none:3
in expression starting at C:\Users[user-name].julia\packages\libass_jll\Ty9Kb\src\wra
ppers\x86_64-w64-mingw32.jl:4
in expression starting at C:\Users[user-name].julia\packages\libass_jll\Ty9Kb\src\lib
ass_jll.jl:43
ERROR: LoadError: LoadError: Failed to precompile libass_jll [0ac62f75-1d6f-5e53
-bd7c-93b484bb37c0] to C:\Users[user-name].julia\compiled\v1.4\libass_jll\JqZi8_whFRm
.ji.
Stacktrace:
[1] error(::String) at .\error.jl:33
[2] compilecache(::Base.PkgId, ::String) at .\loading.jl:1272
[3] _require(::Base.PkgId) at .\loading.jl:1029
[4] require(::Base.PkgId) at .\loading.jl:927
[5] require(::Module, ::Symbol) at .\loading.jl:922
[6] include(::Module, ::String) at .\Base.jl:377
[7] include(::String) at C:\Users[user-name].julia\packages\FFMPEG_jll\1XNMx\src\FFM
PEG_jll.jl:1
[8] top-level scope at C:\Users[user-name].julia\packages\FFMPEG_jll\1XNMx\src\FFMPE
G_jll.jl:47
[9] include(::Module, ::String) at .\Base.jl:377
[10] top-level scope at none:2
[11] eval at .\boot.jl:331 [inlined]
[12] eval(::Expr) at .\client.jl:449
[13] top-level scope at .\none:3
in expression starting at C:\Users[user-name].julia\packages\FFMPEG_jll\1XNMx\src\wra
ppers\x86_64-w64-mingw32.jl:4
in expression starting at C:\Users[user-name].julia\packages\FFMPEG_jll\1XNMx\src\FFM
PEG_jll.jl:43
ERROR: LoadError: Failed to precompile FFMPEG_jll [b22a6f82-2f65-5046-a5b2-351ab
43fb4e5] to C:\Users[user-name].julia\compiled\v1.4\FFMPEG_jll\uSD0T_whFRm.ji.
Stacktrace:
[1] error(::String) at .\error.jl:33
[2] compilecache(::Base.PkgId, ::String) at .\loading.jl:1272
[3] _require(::Base.PkgId) at .\loading.jl:1029
[4] require(::Base.PkgId) at .\loading.jl:927
[5] require(::Module, ::Symbol) at .\loading.jl:922
[6] include(::Module, ::String) at .\Base.jl:377
[7] top-level scope at none:2
[8] eval at .\boot.jl:331 [inlined]
[9] eval(::Expr) at .\client.jl:449
[10] top-level scope at .\none:3
in expression starting at C:\Users[user-name].julia\packages\FFMPEG\vocw2\src\FFMPEG.
jl:3
ERROR: LoadError: Failed to precompile FFMPEG [c87230d0-a227-11e9-1b43-d7ebe4e75
70a] to C:\Users[user-name].julia\compiled\v1.4\FFMPEG\TGvga_whFRm.ji.
Stacktrace:
[1] error(::String) at .\error.jl:33
[2] compilecache(::Base.PkgId, ::String) at .\loading.jl:1272
[3] _require(::Base.PkgId) at .\loading.jl:1029
[4] require(::Base.PkgId) at .\loading.jl:927
[5] require(::Module, ::Symbol) at .\loading.jl:922
[6] include(::Module, ::String) at .\Base.jl:377
[7] top-level scope at none:2
[8] eval at .\boot.jl:331 [inlined]
[9] eval(::Expr) at .\client.jl:449
[10] top-level scope at .\none:3
in expression starting at C:\Users[user-name].julia\packages\Plots\NVH6y\src\Plots.jl
:15
ERROR: Failed to precompile Plots [91a5bcdd-55d7-5caf-9e0b-520d859cae80] to C:\U
sers[user-name].julia\compiled\v1.4\Plots\ld3vC_whFRm.ji.
Stacktrace:
[1] error(::String) at .\error.jl:33
[2] compilecache(::Base.PkgId, ::String) at .\loading.jl:1272
[3] _require(::Base.PkgId) at .\loading.jl:1029
[4] require(::Base.PkgId) at .\loading.jl:927
[5] require(::Module, ::Symbol) at .\loading.jl:922

[mkborregaard]

We've had recurrent reports of users having install issues (with Plots in this case) because FFMPEG sometimes doesn't install on Windows, e.g. JuliaPlots/Plots.jl#2419