Dark and Light has announced that due to an undefined problem, the download of their game has been postponed:
Following a problem that occurred today regarding the game database, we have to postpone Dark and Light's download. We're of course actively working to solve this problem, and we will give you further news and a precise delay as soon as possible. Meanwhile, the stress test remains open, and an important patch will be released.
Please note that the Dark and Light download will occur through a Bit Torrent file, then you will update through a patcher (not through the update.bat). We suggest you keep the Bit Torrent file you downloaded for the stress test (the 1.8 GB archive) in order to save some download time.
Please accept the apologies of the entire NP3 team regarding this inconvenience: we're doing our best to solve this matter ASAP.
Read more about this on their forums, here.