Invoking frog as follows:

frog --language=nld -t test.txt -n --skip=npc--id=test -X test.xml -o test.out

This used to produce both a test.out file and a text.xml file. Now it only produces columned output and disregards the FoLiA.

The frog webservice relies on this behaviour to produce both files in a single pass and now breaks on this.