I'm trying to load the SymPy package so that I can do some symbolic 
calculus. I'm not sure this is the right place to post simple "crash 
log"-type questions like this, and in general I feel like a nooB for 
posting on a mailing list after a total of just 3 google searches and 2 
source files opened and looked-at, but ... well, I am new at Julia, so I 
don't know where to look and what to try for things like this as I would in 
my stronger languages. So, if this is the wrong place, apologies in 
advance. 


INFO: Precompiling module SymPy...
ERROR: LoadError: LoadError: UndefVarError: computeY not defined
 in include at 
/Applications/Julia-0.4.3.app/Contents/Resources/julia/lib/julia/sys.dylib
 in include_from_node1 at 
/Applications/Julia-0.4.3.app/Contents/Resources/julia/lib/julia/sys.dylib
 in include at 
/Applications/Julia-0.4.3.app/Contents/Resources/julia/lib/julia/sys.dylib
 in include_from_node1 at 
/Applications/Julia-0.4.3.app/Contents/Resources/julia/lib/julia/sys.dylib
 [inlined code] from none:2
 in anonymous at no file:0
 in process_options at 
/Applications/Julia-0.4.3.app/Contents/Resources/julia/lib/julia/sys.dylib
 in _start at 
/Applications/Julia-0.4.3.app/Contents/Resources/julia/lib/julia/sys.dylib
while loading /Users/chema/.julia/v0.4/SymPy/src/plot-v4.jl, in expression 
starting on line 453
while loading /Users/chema/.julia/v0.4/SymPy/src/SymPy.jl, in expression 
starting on line 170
Failed to precompile SymPy to /Users/chema/.julia/lib/v0.4/SymPy.ji


The context of line 453 /Users/chema/.julia/v0.4/SymPy/src/plot-v4.jl is:

##################################################
### Plug into Plots interface. Where there is something defined for 
Functions we
### define for symbolic expressions
## Additions to Plots so that expressions are treated like functions

typealias SymOrSyms @compat(Union{Sym, Plots.AVec{Sym}})
Plots.convertToAnyVector(ex::Sym; kw...) = Any[ex], nothing
function Plots.computeY(xs, ex::Sym)  #line 453
    u = free_symbols(ex)[1]
    mapsubs(ex, u, xs)
end

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