The conversion of the project was successful.

The new directory structure is as follows:

C:/Users/dhart/Documents/COURSES/471/textbook/TEXTBOOK 2007/Averaged converter
    buckavg.opj
    buckavg.dsn
    buckavg.dbk
C:/Users/dhart/Documents/COURSES/471/textbook/TEXTBOOK 2007/Averaged converter/buckavg-PSpiceFiles
    buckavg.ind
    buckavg.lib
C:/Users/dhart/Documents/COURSES/471/textbook/TEXTBOOK 2007/Averaged converter/buckavg-PSpiceFiles/SCHEMATIC1
    1.sim
    SCHEMATIC1.als
    SCHEMATIC1.net
C:/Users/dhart/Documents/COURSES/471/textbook/TEXTBOOK 2007/Averaged converter/buckavg-PSpiceFiles/SCHEMATIC1/1
    1.1op
    1.cir
    1.dat
    1.mif
    1.mrk
    1.out
    1.out.1
    1.prb