How many files are you trying to download simultaneously?
Go LW>Tools>Options>Downloads and check how many files you have allowed to download at the same time. If the number is smaller than the amount of files in your present download list, then reduce either the download list by pausing some of the files, or increase the number under Tools>Options and click "Apply"
Also, since the file seems to be quite popular, be patient because there might be many people trying to download it, so the slots of the host might be full.
