NZBdrone on Synology: When moving files during post-process, end up with a partial file

First thanks for that great service.
I really love it.
Now i have a problem running it on my synology ds411.
I use the package from here https://github.com/SynoCommunity/spksrc/issues/671
I have upgraded NZBdrone to the latest dev (to get nzbget fail support and @eaDir ignore).

My problem is that when NZBDrone moves the files from the “download complete” directory to my library folder directory (with season dir), i end up with partial files.
For exemple if the file was 1.4Go i end up with a 500Mo file with the correct name. At first i did not see it as everything seemed correct and thought it was xbmc crashing because the video was stopping sooner.
Then i realized it was a problem with NZBdrone.
I don’t think it happens with every file.
I doesn’t happen with Sickbeard (exact same directories as source and dest).

I dont know what log could be helpful.

Thanks

Same issue as described here, never an issue with SB because of how they do post processing (triggered instead of scanning): http://forums.nzbdrone.com/discussion/653/nzbdrone-trying-to-move-files-before-sabnzbd-finishes-unpacking#Item_32

Solution is to disable the scanning in drone and have a post processing script tell drone to scan the drone factory folder (somewhat like SB does): https://github.com/NzbDrone/NzbDrone/wiki/Disable-Drone-Factory-Folder-Scanning

Oh i get it. it s because of nzbget unpacking directly in the output folder. Sorry i am dumb and should have seen this right away.
Thanks!