By your footer, I'm assuming you are running on a Windows server. SOS Webpages requires an Apache server on Linux, but it is probably not spelled out clearly enough on the website. (http://soswebpages.com/index.php?pages_id=38&t=Download)
The WYSIWYG editor requires gZip compression that may not be on the Windows IIS.
The templates page reads the content of the directories under the assumption it is Apache Server on Linux. But what you describe seems more a database creation error too.
Logging out issue may be related to the way sessions are killed (but I'm not completely confident on this one)
If you are on Windows and not running Apache, I'm amazed it works at all.
If you are on Windows running Apache, there may be some tweaks to make it work, but I don't know Apache for Windows so well.
------------------------------
If you are on Linux / Apache / with all the minimum requirements at http://soswebpages.com/index.php?pages_id=38&t=Download
then I would have to take a closer look to make a guess.
Sorry, I can't provide better help.