Hi agfarran, welcome to Tikiwiki community, and.... welcome to the Catalan Community of users! ;-)
Yep, you found it...
However, there shouldn't be a problem in using accents and so on in titles of pages... The problem is at referencing them as url! (but if using structures, you can use the id instead of the page name).
I guess you may have a look at the Catalan documentation produced so far... ;-)
You are welcome to join there (drop me a message if so) or at doc.tw.o (I'll see you there) to improve it!
P.S. Where are you from? (me from BCN city)