I have a relatively generic 2010 wf on SP 2010 farm that has been working fine but now it will not start either manually or by calling from another workflow. The start screen renders, user can press the start button but then nothing happens. nada. And there is no history of the wf being started in the workflow history. There are no start conditions set and no restrictions on who may initiate the workflow. Other workflows operational. I've been using nintex many years and have never seen this happen. it seems the only course will be to rewrite the workflow but of course I'd like to prevent this from happening again if possible.
Has anyone else seen this or have a suggestion as to the issue?