Knime doesn't execute nodes


I've got a very simple circuit: File reader -> Row sampling -> CSV writer and it seems Row sampling doesn't run.

There are no console errors, I've also tried to restart Knime, but it doesn't work for me.

When I replace Row sampling node with Column filter etc, the problem remains the same. 


Do you have any ideas how to fix it? 

Hello Tomek,

In order to investigate more this issue, would it be possible for you to share an example workflow?

Thank you,