New Joomla site (01/04/18) installed Shackslides (Joomlashack) for home page rotator, working fine.
Installed and enabled Allvideos and rotator rendered as white 15px line. Disabled Allvideos and Rotator worked again.

Uninstalled Allvideos 4.8.0 and installed Allvideos 4.7.0 and everything works fine but I get a Deprecated Error then.
"Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; plgContentJw_allvideos has a deprecated constructor in /home/ronnagy/public_html/plugins/content/jw_allvideos/jw_allvideos.php on line 18"

Hello,

Is there a link with the issue present I can see?

I made a workaround for this issue. (updated the site to v4.8.0 first) The issue is only present if Allvideos and Shackslides are active on the same page.
I called my Mp3 files in a new article and linked to that article from the Home page.
Here is the link: ronnagy.net/index.php/special/interviews-mp3-audio

The rotator is active on this page. It renders as the white line just below the blue menu bar.
I don't really want the rotator on this page but I activated it so you could see what it does.

This is an older 2.5 site that I ended up deleting all Joomla files and starting fresh with a new Joomla 3.8.3 so everything is a fresh install.

I had a similar issue with Shackslides a few years ago where we had multiple instances running on a page. Something updated and broke them so we could only run one on a page.

If there's anything else I can do, let me know.

I am not seeing errors displayed.
At this point I'm comfortable with my workaround. As far as I'm concerned we can consider this subject closed.
If you are interested in pursuing it for your own reasons, I will cooperate fully.