Can't open files with advdupe2 that I've downloaded from servers.

The title says it. But if you didn’t see it. When I try to download dupes from my server that I play on most and then try to spawn it in SP it says like “Advanced duplicator 2 is busy” or “Can’t open atm… please wait” something like that. I have the latest version, I installed it correctly and such. And I’ve tried to upload the file to an other server but still doesnt work. I didnt know where I should write about my problem as I could not find any forums or any threads in this one about that problem. Can someone help me with this?