After 3 years I've looked at SCIG again. Seems to work under PHP 5.3.x. I've uploaded a .tar.gz archive of the version 0.2.1 and added few sentences to the README, which may help new folks install SCIG. Also, I'd love to hear from people who successfully use SCIG on their websites! Mail me at tomahawk_pl at users.sourceforge.net :)
I've decided to redesign and rewrite SCIG. 0.3 will probably be written in Ruby and will allow creating SVGs. Also 0.2.1 is available to download (SVN), It doesn't have major changes, actually it can be unstable, but I just wanted to release the last PHP version if anyone is interested in using and/or developing it. To download 0.2.1 use:
svn co https://svn.sourceforge.net/svnroot/scig/tags/0.2.1 scig
I've decided to make some really big changes in SCIG structure (GUI etc) so 0.3 will probably not appear in few weeks.
Ver. 0.2 is available for download now. It has most of planned features and is stable. Please report bugs and feature requests.