Almost all mods created for version 1.44 or older will need to be updated by their creators to work correctly in 1.45. This includes:
Check your favorite mod websites (like Steam Workshop or ETS2 Mods) to see if the creators have released a 1.45 compatible version . If they haven't, you might want to stay on the previous version (1.44) via the Steam Betas tab until the mods are fixed. euro truck simulator 2 1.45 download