Running I-TASSER

Hi,
I have downloaded I-TASSER5.0 stand alone application. I am not able to run I-TASSER in Red Hat 7.0 (64 bit). I used the mandatory argument

"./runI-TASSER.pl -pkgdir /home/JPJ/Priya_Ph.D/itasser/I-TASSER5.0/I-TASSERmod -libdir /home/JPJ/Priya_Ph.D/itasser/I-TASSER5.0/libdir -java_home /usr/bin/java -seqname DZIP1 -datadir /home/JPJ/Priya_Ph.D/itasser/I-TASSER5.0/datadir",

I get this message in the terminal : ' bash: ./runI-TASSER.pl: No such file or directory. I am new to Linux, kindly help me to sort this issue

I also tried using this command "$ /home/JPJ/Priya_Ph.D/itasser/I-TASSER5.0/I-TASSERmod/runI-TASSER.pl -pkgdir /home/JPJ/Priya_Ph.D/itasser/I-TASSER5.0/I-TASSERmod -libdir /home/JPJ/Priya_Ph.D/itasser/I-TASSER5.0/libdir -seqname DZIP1 -datadir /home/JPJ/Priya_Ph.D/itasser/I-TASSER5.0/datadir/DZIP1 -java_home /usr/bin/java

Your setting for running I-TASSER is:
-pkgdir = /home/JPJ/Priya_Ph.D/itasser/I-TASSER5.0/I-TASSERmod
-libdir = /home/JPJ/Priya_Ph.D/itasser/I-TASSER5.0/libdir
-java_home = /usr/bin/java
-seqname = DZIP1
-datadir = /home/JPJ/Priya_Ph.D/itasser/I-TASSER5.0/datadir
-outdir = /home/JPJ/Priya_Ph.D/itasser/I-TASSER5.0/datadir
-runstyle = serial
-homoflag = real
-idcut = 1
-ntemp = 20
-nmodel = 5
-light = false
-hours = 50
-LBS = false
-EC = false
-GO = false

Your library files are not complete, please download library with the script download_lib.pl

Which library files should I download, except GO term library files, I have downloaded all the files. Kindly help me

Thank you
Regards
Radhika Rao