Attempted to use inside JuliaNB, got errors

[EMCP]

On my first attempt to start using WAV, getting an series of errors when utilized within JuliaNB

Code in notebook

# Add package to read audio files
Pkg.add("WAV")
using WAV

Output

INFO: Package WAV is already installed
INFO: Precompiling module WAV.
WARNING: Module Compat with uuid 22742543754153 is missing from the cache.
This may mean module Compat does not support precompilation but is imported by a module that does.
ERROR: LoadError: Declaring __precompile__(false) is not allowed in files that are being precompiled.
Stacktrace:
 [1] _require(::Symbol) at ./loading.jl:455
 [2] require(::Symbol) at ./loading.jl:405
 [3] include_from_node1(::String) at ./loading.jl:576
 [4] include(::String) at ./sysimg.jl:14
 [5] anonymous at ./<missing>:2
while loading /Users/emcp/.julia/v0.6/FileIO/src/FileIO.jl, in expression starting on line 5
ERROR: LoadError: Failed to precompile FileIO to /Users/emcp/.julia/lib/v0.6/FileIO.ji.
Stacktrace:
 [1] compilecache(::String) at ./loading.jl:710
 [2] _require(::Symbol) at ./loading.jl:463
 [3] require(::Symbol) at ./loading.jl:405
 [4] include_from_node1(::String) at ./loading.jl:576
 [5] include(::String) at ./sysimg.jl:14
 [6] anonymous at ./<missing>:2
while loading /Users/emcp/.julia/v0.6/WAV/src/WAV.jl, in expression starting on line 8
Failed to precompile WAV to /Users/emcp/.julia/lib/v0.6/WAV.ji.

Stacktrace:
 [1] compilecache(::String) at ./loading.jl:710
 [2] _require(::Symbol) at ./loading.jl:497
 [3] require(::Symbol) at ./loading.jl:405
 [4] include_string(::String, ::String) at ./loading.jl:522```

[dancasimiro]

What is JuliaNB?

[EMCP]

iJulia notebook kernel inside Jupyter Notebook, it turns out you cannot update the packages while leaving a notebook open.. and you need to close down the notebook and reopen.