Error with converting mach 3 file

Hello

I've just got a new (old) milling machine that came with the previous owner's mach 3 configuration files. I want to run it with linuxcnc and thought it would be easy to import the configuration files with the stepconf wizard.

However, I get the following errors, which unfortunately mean nothing to me. Would much appreciate help

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Stepconf encountered an error. The following information may be useful in troubleshooting:

Traceback (most recent call last):
File "/usr/lib/pymodules/python2.7/stepconf/pages.py", line 68, in on_button_fwd_clicked
if not self():
File "/usr/lib/pymodules/python2.7/stepconf/pages.py", line 188, in start_finish
from stepconf import import_mach
File "/usr/lib/pymodules/python2.7/stepconf/import_mach.py", line 52, in <module>
dom = parseString(data)
File "/usr/lib/python2.7/xml/dom/minidom.py", line 1930, in parseString
return expatbuilder.parseString(string)
File "/usr/lib/python2.7/xml/dom/expatbuilder.py", line 940, in parseString
return builder.parseString(string)
File "/usr/lib/python2.7/xml/dom/expatbuilder.py", line 223, in parseString
parser.Parse(string, True)
ExpatError: not well-formed (invalid token): line 1, column 401

This is the xml file