Okay Carl, I want you to take a deep breath and relax. This is a major issue and could cause your entire site to crash, or at least your life if you don't fix it immediately.
Now here is what you do:
1. Locate templates/tmpl_uni/page_1.html
2. Open it in a code editor
3. Ensure the code is as follows:
__include _header.html__
__promo_code__
__page_main_code__
__include _footer.html__
4. Ensure it has the __promo_code__ in it.
5. If it does not, input it as you see.
6. If it does have it already, do nothing, just close the file after saving of course.
7. Go into Admin => Settings => Basic Settings
8. Note the Radio Buttons at the top of the Promo Loader
Promo block
Use Promo Flash Reloader Current Images
Make sure it has the Blue dot in it.
One of these 2 tricks should work for you.