Error starting with unicode characters in filename on Windows

[Steven Sproat]

 File \"whyteboard.py\", line 49, in <module>
 File \"wx\\_core.pyo\", line 7978, in __init__
 File \"wx\\_core.pyo\", line 7552, in _BootstrapApp
 File \"whyteboard\\gui\\app.pyo\", line 68, in OnInit
 File \"encodings\\utf_8.pyo\", line 16, in decode
UnicodeDecodeError: \'utf8\' codec can\'t decode bytes in position 14-17: invalid data

Filename: sòlòlèttéréìtalìanè.wtbd
The file opened alright in Ubuntu; failed on Win XP.