DTA 3.0.8, en_us, Firefox 51.0.1 on MacOS 10.11.6
select documents checkbox, include .txt in download list
.txt files not included
Go to site with .txt files as links (eg http://trec.nist.gov/pubs/trec1/t1_proceedings.html), open DTA, select "Documents (pdf, odf...)", note no selection
Please enable Diagnostic Logging in the Privacy tab of the DownThemAll! preferences and either copy/paste essential part of the log or attach the entire log. Please note that the log may include sentitive information which you have to remove prior to posting it!