Quote - Output: "Number of vertices read is 0" -- which makes me wonder if the Hex obj export for Mac is what is screwy. Quick edit: actually... maybe not. There are 'v' lines in the Hex exported obj.

There should also be lines that start as follows printed out :-
File size ...
Number of lines ...

If your not seeing those then the fix isn't kicking in, so replace the following lines if (os.name == 'mac'):

lines = filein2.read()

lineSource = lines.split()

print "File size", len(lines)

print "Number of lines", len(lineSource)

else:

lineSource = filein2

with # if (os.name == 'mac'):

lines = filein2.read()

lineSource = lines.split()

print "File size", len(lines)

print "Number of lines", len(lineSource)

# else:

# lineSource = filein2

This should tell me at least something about what's happening.
I suspect that I'll need you to send me something exported from Hex (a cube would do), so that I can examine it.