1 When using [mathopd](http://www.mathopd.org) to serve ikiwiki, be careful of your Umask settings in the mathopd.conf.
3 With `Umask 026` in mathopd.conf, editing pages resulted in the following errors and a 404 page when the wiki tried to take me to the updated page.
5 append_indexes: cannot open .../[destdir]/[outputfile].html
6 open: Permission denied
8 With `Umask 022` in mathopd.conf, editing pages works.
10 Hopefully this prevents someone else from spending ~2 hours figuring out why this wouldn't work. ;)