“More” span making trouble

So, two separate issues – links not displaying and faulty markup?

For links not displaying – check if your template uses the_content() function, more functionality doesn’t display links after the_excerpt().

For markup I find that you need blank lines around more for everything to work properly.

So this can cause markup issues:

Some text here.
<!--more-->
And more here.

But this works fine:

Some text here.

<!--more-->

And more here.