TypeError and hard-coded filepath

[Gérald Van Huffelen]

When attempting to install Ubuntu via Wubi, I get the exception mentioned in the attachment.

It occurs with wubi from iso, and with wubi downloaded from site.

It says the following:
04-24 22:07 ERROR TaskList: writelines() argument must be a sequence of strings
Traceback (most recent call last):
  File "Z:\home\evan\bzr\wubi.trunk\build\wubi\files\lib\wubi\backends\common\tasklist.py", line 196, in __call__
  File "Z:\home\evan\bzr\wubi.trunk\build\wubi\files\lib\wubi\backends\win32\backend.py", line 152, in copy_installation_files
  File "Z:\home\evan\bzr\wubi.trunk\build\wubi\files\lib\wubi\backends\common\utils.py", line 257, in replace_line_in_file
TypeError: writelines() argument must be a sequence of strings
04-24 22:07 DEBUG TaskList: # Cancelling tasklist
04-24 22:07 ERROR root: writelines() argument must be a sequence of strings
Traceback (most recent call last):
  File "Z:\home\evan\bzr\wubi.trunk\build\wubi\files\lib\wubi\application.py", line 55, in run
  File "Z:\home\evan\bzr\wubi.trunk\build\wubi\files\lib\wubi\application.py", line 125, in select_task
  File "Z:\home\evan\bzr\wubi.trunk\build\wubi\files\lib\wubi\application.py", line 193, in run_cd_menu
  File "Z:\home\evan\bzr\wubi.trunk\build\wubi\files\lib\wubi\application.py", line 117, in select_task
  File "Z:\home\evan\bzr\wubi.trunk\build\wubi\files\lib\wubi\application.py", line 155, in run_installer
  File "Z:\home\evan\bzr\wubi.trunk\build\wubi\files\lib\wubi\frontends\win32\frontend.py", line 137, in run_tasks
TypeError: writelines() argument must be a sequence of strings

Thx for the assistance