Could it be the theme you’re using? I’m also using WordPress 4.0 but so far the ads are displaying correctly for me.
I said the same thing in this thread:
https://wordpress.org/support/topic/wp125-is-not-working-on-wp-4?replies=2
To wp125 plugin support:
Using the plugin in Wp 4.0 in XAMPP, Theme ´2012´.
The image-link is displaying in two separatly parts, first the link and then the image, and it is not the real image it´s the placeholder. Wich suppose should only display in the absense of a real image. What I´m doing wrong? Can you help me w/ this? Here the shortcode copy from Mozilla-FireBug display.
…………………
<div id=”wp125adwrap_1c”>
<div class=”wp125ad odd”>
<img alt=”Solar Sensation” src=”http://localhost/wp-correctSenergy/wp-content/uploads/2014/11/Solar-Sensation2.jpg”></img>
</div>
<div class=”wp125ad even”></div>
<div class=”wp125ad odd”></div>
<div class=”wp125ad even”></div>
<div class=”wp125ad odd”></div>
<div class=”wp125ad even”></div>
</div>
</aside>
……………….