Any other suggestions? I now have three files (two index.fwx files and a guest_list.fwx file) that are exhibiting this behavior. Other files regenerate just fine.
I've asked our network sysadmin to look at this and see if it's some kind of OS problem. Different things indicate that it is the OS, Apache, or FoxWeb at different times, and I've been unable to determine where the breakdown is occurring.
Does FoxWeb have any sort of aggressive debugging mode, where it logs fussy details like "found index.fwx"; "opened index.fwx", "generated index.prg", etc.?