Alright, if you see the Addon Manager menu, this means the program works correctly, and everything is updated.
Crashing while buildings loads might also due to something not related to the program at all like, for example, vram exhaustion, which might be related to buggy video drivers.
Does it happens at all Scenery Complexity settings ? Does it happen at Zurich too (you can just install the Trial, if you don't have it).