Kev,
Sorry if I sounded frustrated earlier, it's just that being pulled back to earlier stuff just makes me less satisfied with what I released back then, & pulls me off current projects to "patch" stuff I'd rather junk & redo over

...
This scenery was created back on an old XP OS. My current set up is an "off line" WIN 7 OS, so I don't think it's a software issue, my comment was that less powerful Graphics card &/or RAM availability might result in this old Sim just cutting straight to CTD rather than slowing up to a stop...
I still think I might be onto something with the Landclass/Waterclass issue, as it seems to affect loading a Free Flight & not overflying after first loading.
But, in the meantime testing the exclude issue is easier.
Rather than moving the files, just delete/archive them.
Try to start a free flight at Woleai. You'll have double shorelines. So long as you succeed in loading, it narrows the excludes as "the" issue.
If you have Rhumbas VTP excludes, activate them & put them low down in the scenery configuration.
That should eliminate the stock shorelines. Check by launching a Free Flight at Woleai again.
In the meantime I'll try to pin down which of Rhumbas vtp excludes pertain to the Caroline's area.