I've used the plug-in before with success on other WordPress blogs, but this time for the blog at http://www.sargearplus.com/blog the sitemap just isn't generating for some unknown reason. The plugin settings say that I should be able to find the sitemap at http://www.sargearplus.com/blog/sitemap_index.xml, and that certainly makes sense, but no sitemap gets generated in the blog folder. When I try to visit that URL, I get a blank page.
I checked the permissions for the blog folder, but they look good (755). I've also got the W3 Total Cache plugin, version 0.9.2.4 installed. I tried disabling it to see what would happen, but it still didn't work. Turning W3 Total Cache back on and clearing the cache also did not fix the issue.
I'm at a loss as to what to do next. Any ideas?