Problem, may be bugreport. FlashGot 1.5.5.98. Mozilla Firefox 29.0.1 (earlier versions too). Download Master 5.20.1.1393 (earlier versions too).
If make several clicks to download several files (all with DM) then the first file be downloaded with DM.
For next files FlashGot window appears, but DM doesn't download it if DM was not fully started at the moment of click on FlashGot window - link will be lost.
(FlashGot window selects DM or browser download.)
No bug if DM is already started (in tray) before several clicks.
Test page for such downloads: http://notepad-plus-plus.org/download/v6.6.2.html
Many download requests frequently
Many download requests frequently
Mozilla/5.0 (Windows NT 6.1; rv:29.0) Gecko/20100101 Firefox/29.0