Problem using 'ms_unicode_arial' font

[ARSimmons]

The font file I have 'arial-unicode-regular' (MS license - not free) is not read by dymo. Is true-type free fonts the only option for being legible to PIL?

Error:

Traceback (most recent call last):

File "dymo-label.py", line 242, in
for place in options.load_inpust(input_files, geometry, options.name_field, options.placement_field):
File "I:\TFS_1\Dymo-maser\Dymo__init__.py", line 206, in load_places
yield_places.Point(name, fontfile, fontsize, location, point, radius, prperties, **kwargs)
...

File "C:\Users\ASimmons.irtualenvs\dymo_label_libs\lib\site-packages\PIL\ImageFont.py", line 253, in truetype
return FreeTypeFont(filename, size, index, encoding)
File "C:\Users\ASimmons.irtualenvs\dymo_label_libs\lib\site-packages\PIL\ImageFont.py", line 137, in init
self.font = core.getfont(font, size, index, encoding)
IOError: cannot open resource

...

[ARSimmons]

UPDATE: I tried switching font files (using a free 'DejaVuSansCondensed') and the error persists. I am using Pillow (the a replacement for pil), could that be tied to this?

Use from PIL import Image instead of import Image. ? (I verified that: \PIL\ImageFont.py does have 'from PIL import image')...