跑degree centrity报错

老师好，

今天尝试跑了degree centrity，没有找到原因。麻烦帮忙看下，谢谢。

报错如下：
Exception occured. (MATLAB:UndefinedFunction)
Undefined function or variable "mPF_list".
1197#line, run_pushbutton_Callback, in "C:\Feng_Liu\software\REST_V1.8PRE_120905\rest_DegreeCentrality_gui.m"
96#line, gui_mainfcn, in "C:\Program Files\MATLAB\R2012a\toolbox\matlab\guide\gui_mainfcn.m"
44#line, rest_DegreeCentrality_gui, in "C:\Feng_Liu\software\REST_V1.8PRE_120905\rest_DegreeCentrality_gui.m"
0#line, @(hObject,eventdata)rest_DegreeCentrality_gui('run_pushbutton_Callback',hObject,eventdata,guidata(hObject)), in ""