In the incomplete folder, files that are red are ones that have lost their original source; ie: may have found a 2nd source & are downlding from that one instead. Search the word red on the forum & you'll end up with more fully explained answer.

Normally the other files in the library are coloured using different rules. Those that are black are ones being shared & those that are red are not being shared. But this does not apply to the incomplete folder.