Chrome not loading generic plugins on win32 any more?

I have an win32 NPAPI plugin that is installed in it's own folder. The
setup registers it under HKEY_LOCAL_MACHINE\SOFTWARE\MozillaPlugins\...
and Safari and Firefox use it just fine - but Chrome does not show it in
"about:plugins".

IIRC, this used to work with slightly older Chrome versions - anyone
have an idea what broke now?

I know how to create a crx, and suppose that would work, but I want to
keep a single, uniform setup in this case.

Martin