I narrowed it down to certain models causing the ctd for me like T17A, M26B, M20B and a few others and as soon as i removed them I was able to start all careers during 1942 with IXC but what is weird is all the models work for others.
Anyways I've left the link up there for you guys who use Toyotagt's mod but I've since removed my Toyotagt install and going to just play Onealex as I have no issues with that compilation using MFM alongside.