I also tried SNAPP on D2L version 9.1.0 and it does not work either. I get a java window at the end and can see the tabs, but no visual map. It also has the issue of only seeing 1 participant (total of 20 participants in the class) and 54 posts (of a 61 post thread).
We'll keep playing around and post what we find. :)
Below is a shot of what we get.