How is possible the installation doesn't find ...\TB\downloader.exe?
What kind of installation is it?
Very strange I did not select Thundebird.
I returned to 2016 version, is better
How can I change the default font for all documents in Textmaker 2018? in this thread http://forum.softmaker.com/viewtopic.php?t=8980 say You have to open the normal.tmv (File => open => file type "template" => normal.tmv). but in 2018 version there is not any normal.tmv... or I don't find...