Longtime VBA programmer, first time on a Mac. Having trouble understanding why this doesn't work. Specifically, when it gets to 
While Not EOF(filenum)
, I get "Run-time error '52': Bad file name or number". However beforehand Excel opened a dialog box to confirm access to the file, so I know it's there. Also when I do "?Dir(filename)" in the immediate window it returns the filename.

I'm confused. Must be an OS X issue somehow but I'm not sure where or how. Any help would be greatly appreciated.

Function reload()
    Dim desktop As String
    Dim filename As String
    Dim filenum As Integer
    Dim file_line As String
    Dim arr() As Variant
    Dim i As Long
    Dim j As Long
    
    desktop = MacScript("return (path to desktop folder) as String")
    filename = desktop & Range("Filename").Value
    
    Sheets("Raw").Cells.Clear
    
    Debug.Print (filename)
    filenum = FreeFile()
    i = 1
    Open filename For Input As #filenum
    While Not EOF(filenum)
        Line Input #filenum, file_line
        arr = Split(file_line, ",")
        For j = LBound(arr, 1) To UBound(arr, 1)
            Sheets("Raw").Cells(i, j) = arr(j)
        Next j
        i = i + 1
    Wend
    Close #1
End Function