It works now!
(I uninstalled everything and followed your steps.)
Glad to know
I could do with re-introducing the styles manager, really.
Until then, I think I might just pack the styles with the main download to save hassle. Yes, it means a bigger download file, but it's a few extra seconds of download time vs. having to faff about with 2 zip files, which has already proven to cause problems.
I'll consider this topic fixed, then. I'll try to make the installation process easier in future, but for now, if you're having problems with the styles (or any levels/replays, or the mass replay checker), try this:
1) Do a fresh install of SuperLemmix 2.0.2 (i.e. into its own directory,
not overwriting an old one)
2) Check that you have version 2.0.1 of the styles (look in styles > README)
3) Paste a fresh copy of the styles folder into the new SuperLemmix directory (it's OK to choose either "skip" or "replace" when prompted)