The content folder within the zips is confusing if you are manually decompressing and installing. You really should only be installing the files within the content folders, not that folder itself. That is the reason I've chosen to use the DIM for all my installations, both DAZStudio and Poser. The app is specifically designed to move those secondary folders and files to their proper places.

Double check if there are any instances of duplicate files installed anywhere else other than the main runtime you have placed Michael 4. That can cause problems with the morphs not functioning. Also, make certain all your morph files are installed into the same M4 base runtime and initialised each time a new package is introduced. Only use the base figure for injecting morphs, prior, saved figures will not accept those morphs properly.