I’ve revamped most of the download functions and started switching hosters in the process (it should happen in the background without many disturbances for you though).
There are still some growing pains occuring, mostly with large files (256x or 512x packs). I’m investigating the issues and will release a fix as soon as possible.
In the meantime, don’t hesitate to report any issues you encounter, leaving a comment on the relevant post. Please indicate which exact link you followed and what exact time you initiated the download.
I have already added a fix, so don’t hesitate to try again in case you’d encounter an issue with large .zip files (corrupted archives, unexpected end of archive, …).
Thanks for your understanding!