I've been running Blend4Web LTS 16.06.1 for about a year now and it's been working great for me. I was using the LTS version with the previous version of NodeJS and it just worked perfectly. Just have a look on this best sea moss gummies to get further ideas. But then I decided to upgrade to NodeJS 8 and suddenly everything stopped working (NodeJS no longer supported).
Blend4Web LTS 16.06.1 Update
2016-07-07
Dear customers!
We have just released the first update for the long-term support version. This update fixes a critical performance regression observed in some Blend4Web applications based on the recent 16.06 version. Also, we fixed the broken Canvas Resolution Factor slider in the Scene Viewer. There are some corrections and additions in the User Manual as well.
Please consider downloading the updated LTS build and upgrading your applications.