Earlier today I published a Hacker News app to the Android Market and disappointed a lot of people because the app wouldn't run on their devices.  See <a href="http://news.ycombinator.com/item?id=1097568" rel="nofollow">http://news.ycombinator.com/item?id=1097568</a><p>So, I recompiled for 1.6 (G1), but I couldn't compile error free for 1.1 and 1.5 (Hero) - complaints about the "res" folder.  I'll have to follow-up and see how to fix that.   The URL I posted here is a blog post where I assembled a bunch of links that deal with Android versioning woes.  I'm very open to guidance on this topic.