function "globpath" error with directory "Documentation"

Dear:

     

    I am a vim user from China.

    My OS is Ubuntu 12.04,  vim version is  7.2.330.   

    I use the vim plugin NERD_tree.vim.  I found that if a directory name "Documentation" , the function! "s:TreeDirNode._initChildren" runs mistake.  This error is caused by the function "globpath" ,    it return nothing.

    thanks and sorry for my poor English.   

---

Wayne Chou.

China.