An error occurred in notepad

If the update patch is applied to the system of which notes Pad will return him an error message, what indicates that it cannot create the file as it appears below.

Notepad
Cannot create him C:Documents and Settings willroDesktoplpt1 file.
Make sure that the path and filename are correct.
What is this error? Can anybody help me? I wait of yours, a clear orientation with more details.
