d20 tag page messed up

the d20 tag page is messed up. I cannot pull it up. I think it has something to do with the d20. tag page because its also messed up.

I discovered this while trying to change d20 to d20 system (since thats what the d20 tag refers to).

In any case both tag pages seem to be a bit busted.

I've patched this up and the page is working for now. I'm still digging to find out how some bad data ended up in the database.