If you have struggled at all with upgrading your Xojo Web Applications from one version to the next check out this blog entry we just wrote: http://www.1701software.com/blog/files/upgrading_xojo_cgi_apps.html
One of the issues many encounter is that after upgrading their application they encounter “cannot launch app X on port YYYY” because their old version is still running behind the scenes. We provide a quick and easy solution to this problem.