when you add files to download by selecting multiple files, the code does not correctly check each file to make sure it isn't currently being downloaded. I think that is the source of this bug. Either way, it still is a bug.

Another bug is that it complains about my download directory being in a shared directory, although i'm not sharing anything. Figure that one out.

Love to see this fixed in the next version, otherwise I love the thing. Enable web interface by default?

hmm maybe that isn't the cause of it... i just got the same error without having duplicate downloads.