The newest public release for MCCC/MC Woohoo is 4.2.0.
Full change log is here.
Installation instructions can be found here.
Troubleshooting can be found here.
This has been tested to be working with (but does not require) GTW, OR, Get Together, Dine Out, City Life, Vampires, Parenthood, Cats & Dogs, Jungle Adventures and the patch released February 22, 2018 – PC 22.214.171.1240 / Mac 126.96.36.1990. It will also work with anything after that Sims 4 update unless otherwise specified on Tumblr/Patreon posts I make after the update. Earlier Sims 4 versions may not be compatible so we often do not support anything below the specified version here!
MC Woohoo – Version 4.2.0 (optional if MC Woohoo features are wanted)
If you receive errors from McAfee trying to download these files, you can use the Patreon post for 4.2.0 as a mirror which should not give you the error.