This morning I got the following email:
We have closed your plugin – Enable Multi-Site – because it is no longer needed with WordPress 3.4
As it does not support IIS or nginx, it was increasingly causing issues with users. Since the process to upgrade has become as simple as changing three files, it is no longer needed by the majority of users, who should be making these changes anyway, in order to become familiar with the system.
If you should like to upgrade your plugin to work with a larger variety of servers, or code it so that it simply will not run if it detects nginx/iis, please update the code and let us know so we may review you changes before re-opening.
Thank you for all your hard work!
This plugin will be updated within the next 6 months. I have some other priorities to wrap up first.