Interesting, maybe the station names file was corrupted. BTW, the version of the webapp is 4513605 as listed under about.
On the Station Names page in the interval program (on the address you listed), 16 stations are listed. On the options page, 1 extension board is listed. However, the snames.txt does appear to show 24 stations. So, it does seem that the corruption occurred in this file. I wonder what might cause this?