FYI for anyone else having this sort of problem...
I've finally sorted it out, turned out to be that as soon as I edited any .conf such as for acronyms or plugins, it wasn't saved in UTF-8, and broke the wiki. I now have downloaded the Crimson Editor, resaved the conf files to UTF-8, uploaded, and it magically works again.
Might be a good idea to mention this in the installation instructions or troubleshooting part, as I only per chance (out of desperation) read down through the *Upgrade* instructions to find this bit of info.
Thanks for your time, Leah
Chris -- DokuWiki mailing list - more info at http://wiki.splitbrain.org/wiki:mailinglist