It restricts the number of variables you can use (typically 6–8 observed variables and 2 latent variables).
To set up the Mplus 6.12 base program and combination add-on, follow these steps: Mplus 6.12 Base Program and Combination Add-on setup free
While modern versions (Mplus 8.x) are now standard, version 6.12 remains relevant for users with older operating systems (e.g., Windows XP, Windows 7 32-bit) or those who need to replicate results from papers published between 2011 and 2014. It restricts the number of variables you can
