Differences in results between standalone and server

Hi,

I have a sequence of about 150 residues that I've run on a local installation of I-TASSER 5.1 and also on the online server. I do not get the same model results between local and server. When I run TMalign to quantify differences between model1.pdb for the two runs, I get a TM-score of 0.89785. While this still indicates strong similarity, my initial expectation was that the two runs would have identical results.

My downloaded libraries are a few weeks old - could not having the most up-to-date, matching libraries result in differences between local vs server?

Thanks in advance for your time!!!

-Hollister