Sometimes it happens that the button Actions throw the error 'Timeout while executing action'.
This happens when you e.g. have big rules which take more time to calculate than the intern timeout setting of the Action is set.
In my case it was the button Action 'Set value' which sets the input values of a subset. This subset triggered the long calculating rules and the Action was waiting for this to be finished.
Up to now this timeout is not editable.
