I'm at the beta testing phase of development and I'm trying to get my app to users without them having to do much work. Some time ago I tested staging an apk on our webservers, setting my phone to install from other sources, and downloaded the apk right from my browser without much difficulty. Now when I try i get a "Download Unsuccessful" message and no more information than that (even viewing the log stream through LogCat in Eclipse tells me nothing). If the mime type is set to be an android package is there any other reason the download (not to mention the installation I hope it to perform) wouldn't succeed? Do I HAVE to go through the AppsInstaller app for off-market installations?