The conversion of the project was successful.

The new directory structure is as follows:

E:/TEXTBOOK/PSPICE AUG 19 2008/CHAPTER 3
    Halfwave Rectifier with Parametric Sweep.opj
    halfwave rectifier with parametric sweep.dsn
    halfwave rectifier with parametric sweep.dbk
E:/TEXTBOOK/PSPICE AUG 19 2008/CHAPTER 3/Halfwave Rectifier with Parametric Sweep-PSpiceFiles
E:/TEXTBOOK/PSPICE AUG 19 2008/CHAPTER 3/Halfwave Rectifier with Parametric Sweep-PSpiceFiles/SCHEMATIC1
    SCHEMATIC1.net
    1.sim
    SCHEMATIC1.als
E:/TEXTBOOK/PSPICE AUG 19 2008/CHAPTER 3/Halfwave Rectifier with Parametric Sweep-PSpiceFiles/SCHEMATIC1/1
    1.out
    1.prb
    1.mrk
    1.1op
    1.cir
    1.mif
