Parser.pxi problems when pretty printing xml file

I'm getting some errors when I'm trying to pretty print a xml file. I've looked everywhere and tried installning latest version of lxml but still getting this error.

My script is pretty simple it looks like this.

import os
import lxml.etree as etree
from lxml.etree import parse
fname = 'C:\Test_folder\SlutR_20150218.xml'
x = etree.parse(fname)
print etree.tostring(x, pretty_print = True)

And the errors I'm getting is following.

Traceback (most recent call last):
File  "C:\Users\a.curcic\Desktop\Övriga_python_script\
Pretty_print_example.py", 
line   5, in <module> x = etree.parse(fname)
File "lxml.etree.pyx", 
line 3301, in lxml.etree.parse      
(src\lxml\lxml.etree.c:72453) 
File "parser.pxi", line 1791, in lxml.etree._parseDocument  
(src\lxml\lxml.etree.c:105915)
File "parser.pxi", line 1817, 
in lxml.etree._parseDocumentFromURL (src\lxml\lxml.etree.c:106214)
XMLSyntaxError: 
Extra content at the end of the document, line 2, column 909