"File Not Found" error when clicking on a Board

[slinke]

I have a forum that has been working fine for years, but one of the Boards has suddenly lost its link:
https://www.sdfhl.org/forum/index.php?board=1.0

It still shows over 20,000 posts with over 2,000 topics, and the link to the last post is still active.

I have run all of the Forum Maintenance and Optimize Tables tasks with no errors.

Links to all other Boards with numerous topics are working fine.

HELP, PLEASE!

[slinke]

Never mind. I cleared the cache in my browser, and the board link is working again.