As title says.

Purchased game today and downloading via good, old, GOG Downloader. Everything seems fine, 'til 1,49 GB dowloaded.

At this point, it stops and I can only read this message.

"Checksum error on chunk 147, please contact support!"

As an alternative, chunk's number is 149.

So, what could I do? :\

Ok. Now, issue is disappeared, and installation seems working.

Still, a shame don't understand the reason of the problem.