When a comment line is at the beginning or somewhere else in the config-file, you will receive an error ("Error at line 1" when the comments are at the beginning) Workaround: 1) Delete comments prior to saving the file (using "apply all" setting) 2) mark all configuration parameters except the comments and use option "Apply selection only" Option "Save settings" is set to on. OS: Windows7 Here is an example with a config-file with comments: # This file was generated by Tor; if you edit it, comments will not be preserved # The old torrc file was renamed to torrc.orig.1 or similar, and Tor will ignore it AvoidDiskWrites 1 ControlPort 9051 DataDirectory C:/Users/Admin/Downloads/Tor Browser/Data/Tor DirReqStatistics 0 ExitNodes {ch},{ru},{bg} GeoIPFile .\Data\Tor\geoip Log notice stdout SocksListenAddress 127.0.0.1 **Trac**: **Username**: steve45king