When I installed SS, I wasn't sure if it was working at first because I got a page with no content except for messages from xdebug that ereg_replace is deprecated and a notice that $_SESSION was undefined. However, it did end up working, so I started with tutorial 1.
Everything was going along just fine until I got to the section about creating a new page type. I saved HomePage.php to mysite/code and then went to dev/build?flush=1 and the same thing I described above happened: identical notices about ereg_replace and $_SESSION and nothing else.
I figured no problem, but when I tried to change my page type for my home page to the new page type, it was unavailable, so now I am stopped cold. Obviously if I can't resolve this I can't learn, let alone use SS, although I would very much like to.
Also, I got these annoying notices when I was building the sub-menus for the about page. I would have to flush from the home page in order to proceed.
PHP entropy 5.3.0 w/xdebug 2.0.5