Not sure what happened to my original post, apologies if this appears twice.

I recently discovered Blend4Web and I'm really impressed with it. I have no problem exporting to html and manually opening the files, but unfortunately neither the fast preview nor project manager appear to be functional. I'm running Blender 2.79b with Blend4Web 18.05.0 SDK on Windows 10.

Specifically : If I press the fast preview button, Blender completely freezes (no functionality, window greys out) for an indefinite period - I've tried waiting for over 10 minutes but nothing happens. Similarly, if I try to access the project manager, a browser window opens to http://localhost:6687/project/ but it just perpetually says "loading" in the table title and nothing ever actually loads. The same happens if I try the "SDK Index" button.

If I access the "index.html" file from the installation directory, I see a page telling me that WebGL is available but the development server is not available. From here, the "project manager" link tries to open c:/project, which does not exist, and "code snippets" similarly access a location which does not exist (file:///C:/apps_dev/code_snippets/code_snippets.html). Both show a page with a "file not found" error.

In the Development Tools section of the Scene panel inside Blender, it says the development server is running. If I stop it I get the error 2716, but then I hit Stop again and it stops. If I then restart the server, then the project manager button does nothing at all - I can click it, but no window or tab opens. The Fast Preview button behaviour is unchanged, i.e. Blender hangs.

Could this be an installation problem ? I set up the scripts directory and activated the add-on as per the installation guide. Initially I had it on a different disc, but I tried moving to the C drive with no effect.

Any help appreciated !

Hi,

I've been hugely impressed with Blend4Web over the last few weeks and enjoying it very much. However, there's an irritating problem that I haven't been able to fix or find a solution for online : neither the fast preview option nor the project manager are able to load (I can export projects to html just fine). Specifically :

- If I click the fast preview button, Blender freezes and I have to close it. I've tried waiting a good ten minutes or both and nothing happens; Blender is completely locked up.
- If I click the project manager button, a web browser opens to the address http://localhost:6687/project/ but this keeps saying "loading" in the tab indefinitely. Nothing ever loads.

Additionally, if I open the index.html in the main Blend4Web directory, I see a webpage saying that WebGL is available but the development server is not available (within Blender, in the Development Tools section it says that the Development Server is running.). I can click on project manager here, but it directs me to c:/project, which does not exist. Similar result for code snippets.

Is there some installation step that I've missed ? I unzipped the archive, set my scripts directory and enabled the add-on as per the installation instructions, but I didn't see anything else.

Any help appreciated !