After rebooting my computer for the first time since install of GUIMiner-scrypt, GUIMiner will no longer start.

Window pops up immediately on start:
"Errors occurred"
"See the logfile 'C:\Users\xxxxxxxx\guiminer.exe.log' for details"

The logfile reads:
ERROR:root:Exception:
Traceback (most recent call last):
  File "guiminer.py", line 2845, in run
  File "guiminer.py", line 2222, in __init__
  File "wx\_core.pyo", line 11206, in Enable
PyAssertionError: C++ assertion "item" failed at ..\..\src\common\menucmn.cpp(841) in wxMenuBase::Enable(): wxMenu::Enable: no such item
Traceback (most recent call last):
  File "guiminer.py", line 2854, in <module>
  File "guiminer.py", line 2845, in run
  File "guiminer.py", line 2222, in __init__
  File "wx\_core.pyo", line 11206, in Enable
wx._core.PyAssertionError: C++ assertion "item" failed at ..\..\src\common\menucmn.cpp(841) in wxMenuBase::Enable(): wxMenu::Enable: no such item


I searched and saw this mentioned in the official thread, but the person runs Windows XP.
It was stated that it was made in/for Windows 7, and that that is the likely cause of this error.

I run Windows 7 Professional x64 however, and I ran GUIMiner-Scrypt with no issues for 6 days, including closing and re-opening the program multiple times. now after reboot, it no longer functions.

Any Ideas?