liquidcross

Makes sense. Thanks very much for your help! Hopefully this was all it was. 🙂

The 500 error is back, as of version 5.7.1 of the plugin. It knocked my site offline a few days after updating, and here’s what my webhost tech support told me:

Looking at the error log in your control panel, it's full of errors similar to the following:
 [Mon Nov 28 08:02:31 2016] [alert] [client xxx.xxx.xxx.xxx] /hsphere/local/home/username/blog.user.com/.htaccess: RewriteRule: cannot compile regular expression '^wp-content/uploads/.*\\.(?:php[1-7]?|pht|phtml?|phps)$'\n
 
 The line it's talking about is 447 in the .htaccess for your site. That's not a line we typically expect to see in a WordPress blog, meaning it's likely something that was added by a plugin; the phrasing around it looks like it's a security plugin of some sort. We commented it out by addin a # to the start of the line, After doing so, it took a very long time for the site to load the first time (we're guessing it was running some kind of maintenance that had been blocked since the site was down, as the site spawned literally hundreds of PHP processes when I tried to load it the first time), but appears to have settled down since.

Is there any way I can fix this short of disabling the plugin?

• This reply was modified 9 years, 5 months ago by liquidcross.

I can’t get that far. My entire site is inaccessible behind that 500 error.

FWIW, I tried replacing the code as shown above in the new file class-itsec-wordpress-tweaks.php, but it had no effect.

Yes indeed. Thank you again for all of your help. Hopefully iThemes will create a permanent fix in the next version.

I just tried editing class-itsec-tweaks.php…and there’s no $rewrites line anywhere in the file.

Gotcha. And I assume there’s no permanent fix unless my webhost updates their Apache installation?

According to my webhost, it’s Apache 1.3.41-1.