My site was previously done in Wordpress, and I opted to switch to Bolt when I changed servers (from a school server to Dreamhost) and got the time to design the thing myself. Once I'd finished doing all my localhost tests, I wiped all the WP content from the public website's root folder and dumped all the Bolt content in. But I didn't delete the associated Wordpress database, so I think what happened was that whenever Wordpress opted to auto-update, it would re-spawn all the WP folders and route my URLs through WP instead. I'd only know about it because I'd navigate to my site and be greeted by WP's "Select Your Language" interface. Other than that, the site has been working fine for about a year now.
This happened to me again a few days ago, and I again deleted all the wp-whatever folders. This time, though, instead of getting my site back, I'm getting a 500 Internal Server Error instead. I have no idea why - I've tried commenting out the entire .htaccess file, even outright deleting it to see if I'd get Bolt's "put me in your document root" error message, but no dice. Error 500 no matter what I do. I checked against my localhost copy and the installation instructions for Bolt to make sure I hadn't deleted a folder accidentally, but that doesn't seem to be the case.
Any ideas? I'm more a front-end than back-end person, so there are probably a lot of obvious things I haven't tried yet.