The developers have looked into this but it really doesn't make any sense. It's not possible to say exactly what causes the false positive. The problem along with the file pointed to (Usp10.dll) has been sent to Qihoo360 (and Avast too) for further examining and whitelisting.

There's absolutely no need to worry about this - or well ... as Johnny Clearwater say: It's always good to be careful about these things, and particularly in crypto. This time, there's no need to worry, though.