Thank you, Jasmine, you guys are great!
I run an educational website, so the glossary plug-in is important to me for highlighting vocabulary in blog posts. Fortunately, the glossary plug-in can be limited the type of content it works on, so I disactivated it for pages (where I have my quizzes).
Disactivating the glossary for pages immediately solved the problem, as you predicted. Now if I want a quiz for a blog post, I can put it on a page linked from the post, allowing me to still run both plugins on separate areas of the site. It works great!
Thanks again!