OK, well open up a sql query window, and do a :
select * from ifty_TabModuleCreation
where completed = 0
This will give you any portal admin tabs that should have been created and weren't.
If this query returns nothing then we'll try something else.
If this query returns some rows, then, for each row returned, execute the following sql:
exec ifty_AddTabAndTabModule @moduleDefId, @moduleControlId
Where @moduleDefId and @moduleControlId are the values found as a result of this query:
select ModuleDefId, ModuleControlId
from ifty_TabModuleCreation
where completed = 0
If you run the stored proc shown based on the values in the tables, then you should get the missing tabs created.