I-TASSER5.1 Standalone Fails in Step 7 looking for files that do not exist.

I was able to get the standalone pipeline working with the example dataset as far as Step 7, but it fails looking for some files that were not a part of the downloads. The files include 4ly7A.pdb, 4zcnB.pdb, 3bb9B.mtx among a few others with different extensions but the same prefix.

The pipeline creates over 100 files up to this point, but fails at the end in that 7th step. It's very similar to the error noted here https://zhanglab.ccmb.med.umich.edu/bbs/?q=node/4486 but I see there was no resolution to that error and I got a bit disheartened.

We tested the data produced versus data we submitted online and it varied enough that we are hoping the differences will be due to Step 7 not completing.

I'm running this on CentOS 7 with gnuparallel, the system has 88 threads and 384GB of RAM.

Any help would be appreciated, thanks in advance!