Is this a bug, or do I expect something that's wrong?
The problem is, the installing application must be able to detect
whether the installation worked well or not. So if the install.js
cancels because of trouble, then the installing application should be
able to report an error message to the user.
dev-tech-xpinstall mailing list
[hidden email] https://lists.mozilla.org/listinfo/dev-tech-xpinstall