Comment 1 for bug 1231186

I think you are right that it is not obvious that the workflow must be saved before the execute button is enabled. It also goes further in that every connected step must be successfully configured before the workflow can be executed.

I will investigate the difficulties in having the execute button always enabled and then providing feedback about what is wrong if the requirements for execution are not currently met. I think in the case of the workflow not being saved an option would have to be made settable where the user could set the option to always save before execution.