Problem in running I-TASSER

Dear, I try to replace $libdir/bin/pair99 by pair99-64, and I have downloaded all the necessary libraries from http://zhanglab.ccmb.med.umich.edu/library/, but is still not work. See:
./runI-TASSER.pl -libdir /home/rcrg4/class_project/tool/I-TASSER -seqname seq.fasta -datadir /home/rcrg4/class_project/tool/I-TASSER/data -usrname rcrg4
Your setting is:
-libdir =/home/rcrg4/class_project/tool/I-TASSER
-seqname =seq.fasta
-datadir =/home/rcrg4/class_project/tool/I-TASSER/data
-usrname =rcrg4
-runstyle =serial
-homoflag =real
-idcut =1
-ntemp =20
-nmodel =5
1. make seq.txt and rmsinp
2.1 run Psi-blast
2.2 run psipred
2.3 run solve
2.3 run solve
2.4 run pairmod
2.4.1 removing homology templates based on real and 1
2.4.2 running pair ................
/bin/cp: cannot stat `pair.3': No such file or directory
/bin/cp: cannot stat `pair.1': No such file or directory
3.1 do threading
start threading QQQ

By the way, the version of linux I use is :
LSB Version: core-2.0-noarch:core-3.0-noarch:core-2.0-x86_64:core-3.0-x86_64:desktop-3.1-amd64:desktop-3.1-noarch:graphics-2.0-amd64:graphics-2.0-noarch:graphics-3.1-amd64:graphics-3.1-noarch
Distributor ID: SUSE LINUX
Description: SUSE Linux Enterprise Server 10 (x86_64)
Release: 10
Codename: n/a

Thank you very much!