I have uploaded mempatch.sty to UK incoming. Please use this to replace
the current macros/latex/contrib/memoir/mempatch.sty.
mempatch v4.0a fixes a problem with the starred section commands in the
memoir class. I will shortly be issuing a further mempatch with added
functions, so if you don't use section*, etc, you could wait for the next
patch.
i've installed the package; thanks for the upload.