This message shows in three situations:

a. You do not have writing permissions for pins.txt file. Set permissions to 755 or 777 –

Please see this:

b. You modified the theme name and reading from file does not work with such a modification. You must keep theme name as original to use this reading system.

c. You have installed/upgraded the theme wrong- theme inside theme

You ONLY need to do this if you are planing the use the “read from file option” for google maps pins.