OK, I installed the YaBB 2.6.0 package off the web site, and as noted elsewhere, the installation was remarkably smooth.
The problem is, it looks like the mods may not be for 2.6.0, but perhaps for a svn version of the forum. (Or somewhere I got a pre-release version of 2.6.0 rather than the final one, maybe.) Steps 9 and 13, I believe, are both looking for things that do not exist in the release package.
Step 13, for example, is looking in micon.def for a language call, yet there is no language call in the file I have.
Where do I find the latest build? And do I just want to load all the files over the top of what I already have installed?
Please don't misunderstand ... this is not a complaint, I just need to make sure I have the right version to work on.