Traceback (most recent call last):
File "teste.py", line 12, in <module>
xfile = openpyxl.load_workbook('C:\Python27\FCREHXMLv2.xlsm')
File "C:\Python27\lib\site-packages\openpyxl\reader\excel.py", line 192, in load_workbook
shared_strings = read_string_table(archive.read(strings_path))
File "C:\Python27\lib\site-packages\openpyxl\reader\strings.py", line 21, in read_string_table
text = Text.from_tree(node).content
File "C:\Python27\lib\site-packages\openpyxl\cell\text.py", line 185, in content
return "".join(snippets)
TypeError: sequence item 2: expected string or Unicode, NoneType found