Actually, I was rather surprised with how forthright they were about it.  They could have easily said "he left to peruse other opportunities" and not leave me thinking about any budget problems/disagreements, beyond the standard "non-profits don't have a lot of money".<p>Where I was unclear, and where I didn't get a lot of follow up information, was on what the disagreements were about.  Did he think they needed an expensive XYZ hardware solution when he could have done with a cheaper and/or open-source one?  Or was the organization requiring him to do the impossible without giving him any resources?  It sounded like whatever it was, it was pervasive through their relationship.<p>My interviewers were non-technical, and so after some prying I decided to save it for our next meeting.