Hello,
I'm developing my forum on a testing environment and I moved the whole forum around sometimes. While I'm doing this I meet often the red "The default theme's directory is wrong, please correct it by clicking this text." error. It is quite frustrating to change those 3 lines every time to fix the URL's and the directories. I think it is not too hard to implement a small autodetect feature into SMF, which could detect automatically the Theme's directory and URL.
I think with that feature SMF would become more "plug-and-play".
Thanks.
At the bottom of the theme page in the admin area is a place to reset the info for all themes with an auto-detected value.
These things are not determined automatically so that those that might want to serve static content off a different server or a more efficient web server (lighttpd, for example) can do so.