I'm running WP 2.8.1 with version 4.6.3 of the AskApache Google 404 plugin (which I love by the way). Up until today everything was fine until I upgraded automatically to version 4.7.1 of said plugin. Suddenly my plugin wasn't working anymore even though I do already have a 404.php page and .htaccess configured properly for my blog. I'm back to version 4.6.3 and everything is back up and running, but now I noticed that my blogs RSS wasn't working anymore. When I'd click on the RSS feed icon, it would display a 404 page! So I took a peek at my permalinks structure and it had been modified to some custom structure. Is it possible the plugin did this? If so perhaps there should be some warning to users because it caught me off guard.
I guess I should know better to do a full backup before upgrading plugins, but I guess I've been able to do it unscathed for a while now so I thought nothing of it until my blog was failing left and right after a plugin upgrade.
If anyone has a similar experience of the permalinks structure changing because of some plugin...even if it's not the AskApache Google 404 one, I'd like to know.
My installed plugins:
AddThis Social Bookmarking Widget
AskApache Google 404
Google Syntax Highlighter for WordPress
Google XML Sitemaps
SEO Friendly Images
SimpleModal Contact Form (SMCF)