actually go in and delete everything (but the index file) from the cache/ directory; one of the files isn't being able to be written to, hence the stale data; then go and clear your cache and it should rebuild from scratch.
I did that previously based on gliderdad's suggestion above. After I did that the external islands started working ok but not the portal ones. But I will try it again either later tonight or tomorrow and report back. Thanks.
