The ClickOnce bootstrapper has a flaw: it will launch the URL to your deployment manifest (the .application file) in the default browser, but unfortunately Internet Explorer seems to be the only browser that can handle these files correctly. This means that the bootstrapper won't work if you use another browser, such as Mozilla Firefox or Opera, as default browser, and your application won't install. This problem only applies when the bootstrapper is used with ClickOnce installations from the web.
More details regarding this problem can be found here: http://channel9.msdn.com/ShowPost.aspx?PostID=138273
This application is a workaround to this problem. It uses the original bootstrapper, but instructs it not to launch the .application file, but instead a simple batch file that will launch ClickOnce directly, bypassing the browser and thus avoiding the problem.
In order to avoid having to distribute multiple files (the bootstrapper itself and the batch file), these files are packed in a wrapper executable that extracts them both to the temp folder, runs the setup, and removes them both when they are finished.
Included is a readme.txt file with instructions on how to use the workaround.