I've just set up a brand new site on 2.6.5. As per my usual practice, I went removed the `<head></head>` of the default template and placed it into my own Chunk. Issue is it won't save.
Investigating I removed the elements one by one and found that self-closing tags cause the issue. For example:
<title>My Title</title> saves fine
But
<base href="[[++site_url]]"> or <base href="[[++site_url]]" /> does not save.
Would anyone know how I could fix?
This seems like mod_security to me, not being able to save, could you ask your hoster if mod_security got triggered around that time?
+1 -- almost certainly mod_security.
