I'm wondering if having the Android SDK path on the D drive could be an issue.
See the Contact page on my site email me with a link to this thread. I will send you some instructions that have worked for everyone else, so far.
This process is a lot easier in RoboHelp 2015.
See www.grainge.org for RoboHelp and Authoring information
Hoping you won't mind my asking if you could tell us what your particular use case is for making the app?
Yeah, I'm a geek but I'm a geek that doesn't "do" the whole smarty pants phone thing. So many things about smart phones as well as tablets escapes me. And I've been trying to wrap my mind around exactly why one would have a need to create an app out of something like RoboHelp HTML pages.
Note that I'm not saying anyone is wrong or that it shouldn't happen or be a possibility, but just wanting to understand how an app is better and more useful than perhaps Responsive help on a server or something like that.
Please don't revoke my geek card!
are you perhaps using non-English characters in file names or paths? My app building process crashed too until I figured out I had to avoid German characters (ö, ä, etc).