Unable to install on Blender 2.76b

Hi! Trying to install blend4web gives me this error:

Traceback (most recent call last):
File "/home/user/.steam/steam/steamapps/common/Blender/2.76/scripts/modules/addon_utils.py", line 324, in enable
mod = __import__(module_name)
TypeError: source code string cannot contain null bytes

Import-export: blend4web is on add-ons, but when i try to enable the addon, the above message pops out.
Thanks!

p/s my version is blend4web_sdk_free_16_02

I tried 2.76 version also, and a blender plugin, just not working (no error message).
The only way for me was to point scripts to: /blend4web_sdk_free/blender_scripts/
Now i get a warning:
Deprecated path to scripts. The correct path is….and the message window is too narrow, so can't see the full path

Hello Wintch and welcome to our forums!

Try to point the scripts path to the SDK's root. It should help!

Really double checked everything. The warning is also asking me to point scripts to sdk root folder, but once that is done, blend4web is not showing anymore (user preferences>add-ons). Blender starts fine, no error messages.
Besides the message, pointing to /blend4web_sdk_free/blender_scripts/ is working fine.

I decompressed zip again, and now it is working fine (pointing to root folder). Must be something with my setup. Thanks!