cannot stat './closc*.pdb': No such file or directory

Hello

I am using I-Tasser to predict the structure of a protein. At step 5.1 I get the following error:
"
5.1 do clustering
No. of trajectory files: 62
Calculating RMSD scores
8.00000000 3.50000000 12.0000000
Note: The following floating-point exceptions are signalling: IEEE_INVALID_FLAG IEEE_DIVIDE_BY_ZERO
cp: cannot stat './closc*.pdb': No such file or directory
cp: cannot stat './combo*.pdb': No such file or directory
5.2 build full-atomic model
"
What should I do?

Any help is appreciated in advance
Mahdi