importing OLD models

[Neil Kidney]

Hey folks,
 
Trying to import models from 2006 ish (so whatever version that was. v5 or
v6?) Into 2012, but getting 
Missing object to load this model . object missing is [[CLSID\....
Have tried various other models from 2006 - 2008 that we have and getting
the same error so I assume it's not bug in the model.
 
Anyone know anything about it?
 
Cheers.