Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
Have you installed any new scenery recently that might include mesh updates?
The only tip I can give is to have a look at the scenery library and make sure that dillingham x is higher in the list than anything else that might conflict with it.
Wouldn't that just add it to the end of the scenery library though?
Agree it would fix an installation problem, but if there's other scenery interferring with it then you'll still need to look at the scenery library or scenery.cfg file to set the priority or turn off the offending item.