It may mean that you have a duplicate downld incomplete. Sometimes happens & it has lost its relationship to the original source. I have manage to get these to start downlding but if you already have it downlding into another incomplete then it's not necessary.

It can also mean that all your files have not yet fully been accounted for by LW. Shared Library items in red means they're not being shared (at least yet.)

It can also mean THUS.