I feel your pain! I started a project and ended up not finishing because we used two cameras (incompatible with each other) and the other person stubbornly would not make the effort to give me the scene shot on his, therefore I had to release a truncated version. Being a writer first, I was able to make it work, though not to my liking. I am now re-making that film, more on that later... My project after that got off track because my lead actor, after a month into production, informed me he had got himself cast in two plays at college and the director had an edict that his actors can't work on other projects during his glorious productions (and the guy was too wimpy to give me even a weekend day behind Napolean's back). It was a three month(!) pause that killed the project -- though I did land my producer for my budgeted feature and he wanted me to direct a documentary for him, so I had a net, you might say, which worked well for me (until THAT project froze, thanks to the economy, LOL/tears).
Yes, it is VERY difficult to find people as dedicated to it as they SAY they are, sometimes -- unless you're lucky and get a group of people who mean what they say. However, my solution has been this: Now that I can shoot 1080 (before we were shooting on DV tape and doing the films only for internet distribution and maybe on a DVD), I do what I call "no budget" pictures, i.e. available resources and cash donations as we go. I sign my actors up on an incentive that they will get paid a defined sum IF the movie makes money. We are presently doing a re-boot on that movie mentioned above and will market it on DVD/BluRay via website and a distributor I've established a relationship with since my budgeted feature project became real (They want it so I have an open door to them now on other projects). My actors will get payments, up to their contracted total, as the movie makes money, plus a copy of the DVD, of course. I've found this incentive keeps their attention. I also use no fault contracts so pains in the butt can be booted and replaced at will (my will, that is).
Another thing you might consider is finding that one day per week that works for everyone and keeping your schedule to that. My troupe has really liked this. They tell me the consistency helps with their focus and enthusiasm.
Anyway, this is probably more than you wanted to hear from a newbie here
