Welcome to the forum, and more importantly to EB!

When you say you cannot destroy the Camillan MIC, could you possibly be mistaking the 'Camillan Era' card for a barracks? The Era cards (Camillan, Polybian, Marian, Time of Soldiers etc.) cannot be destroyed, but they aren't the same as MICs. MIC of course being a shorthand for barracks, stables and so on that you are probably quite familiar with already, but I have to cover the bases just in case.

The big question is about the script. It includes a turn counter for all the "not before 242BC" conditions used by reforms, so if you haven't been turning it on every time you start then the script has no idea what year it is.

Also note that the MIC in each city has to be upgraded to get the reform units. The reforms will have happened (the advisor gives you a message and a "Polybian Era" card is added to every city) but if you have maxed out your MIC upgrades then you would actually have to destroy them and rebuild from the bottom (a good reason not to max them out early on.)