I am creating a site with three portals - English (main), Latvian and Russian. 

I was able to setup the menus for the Latvian portal fine.  When I setup the pages in Russian, I was able to setup all the pages with the Russian names, however, when I went to change the Home page name, it let me do so, however, I now get a critical error whenever I try to add pages or edit page settings in that portal. 

For all of the pages in both the Latvian and Russian portals, I just Added pages and copied and pasted the translated page names from Notepad - everything worked fine, until I change the home page name in the Russian portal. 

I did add Latvian and Russian to Supported Locales when I first setup the portals, but I have not done anything with any ML solutions.  Since everything was working ok I was hoping I did not need to do anything more... but now I am concerned this is only one of the many problems I may end up experiencing as I start adding content without taking some additional steps. 

I have reviewed several postings, but I am not sure what next steps to take.  Do I need to install language packs and an ML solution (if so, do you have a recommendation for one that would resolve the home page menu)  I would REALLY appreciate being pointed in the right direction and any recommendations.