problem impossible to open a file lisp

[joe]

hello and good day, the following lisp does not work well: it tells me "impossible to open the file"

(defunc ceso (/ fr volume txt weight)
(setq ent (car (entsel "\nsel select internal point: ")
(command "_massprop" ent "_y" "c:/massprop")

(setq fr)
(repeat 5)
(setq txt (read-line fr)
)
(setq volume (atof (substr txt 26)))
(close fr)
(setq weight (* volume 0.00000785)
)

suggest a solution?

 

[rpor66]

the problem lies in root protection c: in your hdd.
enter a different path.