You can download any file using this new base URL: http://digitalcorpora.s3-website.us-west-2.amazonaws.com/corpora/
For example, corpus file drives/nps-2014-xbox1/narrative.txt can be downloaded from:
http://digitalcorpora.s3-website.us-west-2.amazonaws.com/corpora/drives/nps-2014-xbox1/narrative.txt
You can browser the DigitalCorpora S3 bucket here: https://digitalcorpora.org/s3_browser.html