Error getting License. Licence Server Communication Problem. E_STREAM_ERROR

Error getting Licence. License Server Communication Problem E_STREAM_ERROR:

Trying to download an e book from my local library. Downloaded a new Adobe Digital Edition v 4.5.11.187212. I didnt authorise it. when I got this error, I through perhaps I needed to authorise the software so signed up for a new Adobe account. Once authorised, I tried downloading the book again - same error. I also tried to download a different book - in case that was the problem. 

I see there are a few Error getting license issues on this forum - but couldnt find any with the E_STREAM_ERROR:

The one I did find suggested that I try downloading from a different browser - I used Chrome and IE and got the same error.

Any advice appreciated!

Thanks