If it's happened to the incomplete files then see the usual reasons here Downlds refuse to reload (click on link)

LW 4.12 is the 1st version which will continue them from where they were & not from zero %!!!

Howevr if the files in red are your downld files then you probably aren't sharing them. The Saved Files folder files may be red if you don't have the option to share files immediately checked in the LW options. Recheck your Shared folders options. Go to LW's menu bar, Tools>Options>Sharing & check the options & which folders you're sharing if any. Add the appropriate ones & press apply button. See How to Share Folders (click on link)