What sits behind those logic-gate symbols?
If there's a schematic, then it has FETS that
need models declared (its path-to) matching
the device names.
If they have behavioral views then there's a
library somewhere for them I expect. You
might look for "affinity groups" like LTSpice
has, which might hold "contrib" libraries of
various products' and generic models.
Descend-edit into the gates and see what
you find. Look at the simulator error report
to see what may be inhibiting execution,
there's always a clue in every complaint
(though not necessarily crisp or complete).