When downloading the known good results file for CMS131V10 test, everything passes when I select this zip file for upload. 

However, after I've unzipped the file, and looked at the results. zipping the same known good results file via mac gui or terminal CLI results in failure. 

I've attached the two files below. The original known good results is labelled as , and mine is labelled 'failure'. 

I noticed that my failing file is larger than the original. Is there a specific zip format parameter that i am missing?