Snippets stopped working on Dreamweaver CC

I created a series of snippets for some tooltips I want to insert in a web page on a wildflower.  I started inserting them in my page, which is here:  (link to website removed by moderation, as not relevant to problem).

In the middle of this process, Dreamweaver closed on me.  When I reopened Dreameaver, the snippets panel was still there, with my snippets listed.  However, the trigger key no longer responded.  The insert button did not respond either.  I am now unable to use my snippets to create the tooltips.

Please help!