It took lot of time and was scary when it wiped of my posts. But finally it works great. Couple of hints:
* Make sure you take the backup of site
* Get the latest version of the plugin
* Try simple test page without selecting any options like 'convert related pages to wiki' etc
It should work. I have been looking this kind of plugin for a while. Functionality - all basic things work great! I hope it will catchup.