Butler 4.1.14 is now out, and if you’re running OS X 10.8.2, it’s a very highly recommended update. That’s because the main purpose of this release is to work around a bug that Apple introduced into inter-application communication in 10.8.2. The result of this bug is that Butler would appear to hang at times, typically when it was talking or listening to iTunes.
Obligatory footnote: Yes, we’re still planning on releasing Butler 5. We don’t yet have a beta or release date, but as soon as we have either, we’ll make sure everyone knows about it.