I tried all the other options and none of those fixed my issue, and installing it into a new directory fixed the issue. I just added a 2 at the end of the proposed directory.
this is the issue that I had.
m3i_core_win64_1574376026.enc
m3i_core_win64
another step that I made, but I'm not sure if that helped, I installed just matlab and simulink first, after it was completed and activated, I installed the rest of the packages.
UPDATE: I just had a similar issue while updating Matlab on my Mac.
m3i_core_maci64_1574371482, m3i_core_maci64
this is what I did, I deleted the folder from Applications and installed first Matlab and Simulink, that avoided the extract error.