XF 1.5 Can't Save Template Edit

[Jim McClain]

I decided to try adding an Adsense ad that fits below the stickies in a thread list. I have used similar code that I found here in instructional threads, edited to suit my needs and my ad code. When I click the Save All Changes button, I get a nearly blank page that has only the date/time. See the 2 images below. I hope you can tell me what I might be doing wrong.

 

[Jim McClain]

Actually, the Wordfence plugin is excellent security for the whole site, not just the WP part of it. I use the free version on all my sites (it's a WP plugin, so of course you need WP installed).