waf error

russellh@prescott:~/rtems/work/examples-v2/ticker$ waf configure --rtems=/opts/rtems \
>                     --rtems-tools=/opts/rtems \
>                     --rtems-bsps=sparc/erc32
Waf: The wscript in '/home/russellh/rtems/work/examples-v2/ticker' is unreadable
Traceback (most recent call last):
  File "/home/russellh/bin/.waf-1.9.12-46ae1733752575b7ea2378b1eca4e1ae/waflib/Scripting.py", line 106, in waf_entry_point
    set_main_module(os.path.normpath(os.path.join(Context.run_dir,Context.WSCRIPT_FILE)))
  File "/home/russellh/bin/.waf-1.9.12-46ae1733752575b7ea2378b1eca4e1ae/waflib/Scripting.py", line 137, in set_main_module
    Context.g_module=Context.load_module(file_path)
  File "/home/russellh/bin/.waf-1.9.12-46ae1733752575b7ea2378b1eca4e1ae/waflib/Context.py", line 353, in load_module
    exec(compile(code,path,'exec'),module.__dict__)
  File "/home/russellh/rtems/work/examples-v2/ticker/wscript", line 6, in <module>
    import rtems_waf.rtems as rtems
ImportError: No module named rtems_waf.rtems