I installed a copy of the may 27th daily build today, and came across a few bugs that I needed to fix before it worked for me. A patch of them is here
http://www.willscott.name/file_download/5
The changes:
* The HTTP class was checking for headers without making sure they existed
* The object constructor was not quoting constructors correctly (this broke the install for me until I changed it)
* Sub menus can go out of bounds (my fix here is not very elegant, it just makes the error go away)
* Misnamed variable in data object
* misnamed variable in main.php