STRUM failed

Hello!

While running STRUM, I am getting following error. Could you please suggest reason and solution for this?

[singhma@genesis STRUM]$ ./runSTRUM.pl -datadir /home/gnss/singhma/STRUM/example/ -pdb 1arrA.pdb -mutation S35G

Your setting for running I-TASSER is:
-libdir = /home/gnss/singhma/STRUM/STLIB
-datadir = /home/gnss/singhma/STRUM/example/
-runstyle = serial
-seq =
-pdb = 1arrA.pdb
-mutation = S35G

Note: The pudated pdb is /home/gnss/singhma/STRUM/example//pdb.pdb
LOMETS is running......
hhblits is running......
SIFT is running......

get the secondary structure......
get SA, phi and psi......
seq.exp.sa is given by get_SA_phi_psi.pl
seq.svr.phi and seq.svr.psi are given by get_SA_phi_psi.pl
get weighted average BLUSUM......
seq_wt.we is given by WBLUSUM_wt.pl
seq_mt.we is given by WBLUSUM_mt.pl
Preparing Strucutres for model-based features......
RW and DFIRE is running......
Amber is running......
Foldx is running......
cp: cannot stat `/tmp/STsinghma/1arrA304092202/foldx_wt/1arrA.stability': No such file or directory
cp: cannot stat `/tmp/STsinghma/1arrA304092202/foldx_mt/1arrA35G.stability': No such file or directory
we can not get results from Foldx

Many thanks!
Malkeet