It sounds like not all .js files are there on your server. When I install the plugin on a fresh environment there are no issues. Can you try to remove the current plugin, and install a fresh copy, to make sure it’s not caused by missing files?
Thanks for qick response.
I replaced and reinstalled the plugin with zip from your site. No result.
The backward replacement with older 1.7.1 directory works (only testet local).
Finaly I upgraded WordPress from 6.5.5 to newest 6.6.2 and it seems to be cured.
Seems like the update purged something in database/structure … because one site with WP 6.5.5 works fine with Burst 1.7.2
Problem solved for me
Thanks for the detailed report, and great it works now!