Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/typecatcher/TypeCatcherWindow.py", line 200, in on_download_btn_clicked
    DownloadFont(self.font, uri=None)
  File "/usr/lib/python2.7/dist-packages/typecatcher/DownloadFont.py", line 37, in DownloadFont
    write_font_file(font_url, font_dir, font_name, variant)
  File "/usr/lib/python2.7/dist-packages/typecatcher/DownloadFont.py", line 53, in write_font_file
    with open(f, 'wb') as f:
IOError: [Errno 13] Permission denied: '/home/username/.fonts/typecatcher/ABeeZee_italic-400.ttf'