The last RPGBoard version is 2.25, with the beta stopped at 2.30.  If you plan on using the SpellCheck, download the dictionary file along with RPGBoard.  (Please don't ungzip the dictionary file, unless you're installing it on an NT machine.)  Above all, pleeeeeeease read the Admin FAQ!  Keep in mind that I won't answer questions about RPGBoad any more.

The beta version is located in the nightly TARs here.  There's a lot of new stuff, tested fairly well, but the HTML4/CSS conversion is incomplete.  (Mostly finished, but still missing conversions for the Registration and Stats scripts.)  The docs for upgrading to the beta were never updated, so you're on your own for that one.

Download 2.25: TAR/GZIP or ZIP
Download the RPGBoard-to-phpBB convertor here.

You can still use the translations here.