title: Julia MAC Installation
body: <p>I am trying to install Julia on my MAC. I came up with the following error during installation:</p>
  
  <p><a href="https://i.stack.imgur.com/3eD0C.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/3eD0C.png" alt="enter image description here"></a></p>
  
  <p>Any idea is appreciated  about what the problem can be.</p>
  
  <p>Edit:
  "test.jl is like this:</p>
  
  <pre><code>using JuMP
  using Gurobi
  m = Model(solver=GurobiSolver())
  
  
  
  m = Model()
  
  @variable(m, x )              # No bounds
  @variable(m, x &gt;= lb )        # Lower bound only (note: 'lb &lt;= x' is not valid)
  @variable(m, x &lt;= ub )        # Upper bound only
  @variable(m, lb &lt;= x &lt;= ub )  # Lower and upper bounds
  @variable(m, x == fixedval )  # Fixed to a value (lb == ub)
  
  @variable(m, x[1:M,1:N] &gt;= 0 )
  
  aff = AffExpr([x, z], [3.0, 4.0], 2.0)  # 3x + 4z + 2
  quad = QuadExpr([x,y],[x,z],[3.0,4.0],aff)  # 3x^2 + 4yz + 3x + 4z + 2
  
  @constraints(m, begin
    x &gt;= 1
    y - w &lt;= 2
    sum_to_one[i=1:3], z[i] + y == 1
  end)
  
  @expression(m, shared, sum(i*x[i] for i=1:5))
  @constraint(m, shared + y &gt;= 5)
  @constraint(m, shared + z &lt;= 10)
  
  expr = @expression(m, [i=1:3], i*sum(x[j] for j=1:3))
  </code></pre>