Strange, I don't have any black screen problem with the latest version. Did you unckeck "Export data only" when exporting? Maybe your game executable is out-of-date.
Besides, version numbers can mean anything depending on the project. A major number change generally stands for a major improvement. There's no reason to increment this number unless the developer thinks there is. And in my opinion, the project hasn't been "stuck" at all, on the contrary, Justin is doing a great job and development has been very active. In any case, this is alpha software, which means you can expect two things: it may lack some features, and it may break.