The conversion of the project was successful.

The new directory structure is as follows:

C:/COURSES/471/textbook/TEXTBOOK 2007/Averaged converter/3
    Averaged with step change.opj
    averaged with step change.dsn
    averaged with step change.dbk
C:/COURSES/471/textbook/TEXTBOOK 2007/Averaged converter/3/Averaged with step change-PSpiceFiles
    averaged with step change.ind
    averaged with step change.lib
C:/COURSES/471/textbook/TEXTBOOK 2007/Averaged converter/3/Averaged with step change-PSpiceFiles/SCHEMATIC1
    1.sim
    SCHEMATIC1.als
    SCHEMATIC1.net
C:/COURSES/471/textbook/TEXTBOOK 2007/Averaged converter/3/Averaged with step change-PSpiceFiles/SCHEMATIC1/1
    1.1op
    1.cir
    1.dat
    1.mif
    1.mrk
    1.out
    1.prb