[mysql] 1067 error on attempt to start MySQL

I had the same problem. In my case, it was "user error" (although the Windows installer should have been smarter about it and prevented me from committing such an error).

During installation, if you make changes to the default installation paths, make sure you use the same paths for both the "Server data files" on the Custom Setup screen and then later in the "InnoDB Tablespace Settings" during the "MySQL Server Instance Configuration Wizard"