I have a file with the following content:
and when I give the following command:
java -Djava.awt.headless=true -jar "D:/Programs/plantuml\plantuml.jar" -ttxt aa.pu
the resulting aa.atxt is not a ASCII-art file but a png file. Same problem with utxt
This happens with the latest current beta version 1.2018.08beta9 I have.