An update: I have experimented with Eclipse and now I tend to believe that
what made the ExampleProject work is
* not compiling ruta-2.7.0 and setting UIMA_HOME variable to point to it;
* but rather running [UIMA Ruta/Update project] on the project.
Please consider this issue solved.
On Tue, Apr 16, 2019 at 9:11 AM Peter Klügl <[EMAIL PROTECTED]>