Not sure whether this is theme related, but... I'm having a bit of trouble accessing my existing pages after editing the Permalink Settings. I assume my mod_rewrite or .htaccess or both were changed.
For example, I'd like to be able to access example.com/mypersonalpage/ilovepookie.html outside of WordPress.
More detail: Before I edited the Permalink Settings, I could not see classified ads. I was getting 404 errors. So I assumed something was wrong with mod_rewrite. I figured I'd just edit the Permalink Settings and then save, hoping that doing so would write the right rules. That worked. However, when I went to access the existing pages, and I'm getting 404 errors for them.
What's the best way to ensure that I still have access to existing pages when installing or upgrading WordPress or themes?
Thanks! (Yes, I searched. All over the web, in fact.)