Could Not Map Upnp Port On This Pass, Retrying

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I have version 1.3.94 on my Debian Server and have version 2.0 on my Windows 7 Desktop. Today I tried to sync my Linux directories to my Windows 7 Desktop and was presented with a screen on W7 to configure my system. I don't recall updating my Windows to version 2.0 but it 's done and I've lost the ability to sync files from my Linux system to my W7 Desktop.


I'm getting an error message in my sync.log file on my Debian system:


Could not map UPnP Port on this pass, retrying


I've done the research and can't find a workaround for this problem.


Do I have to uninstall version 1.3.94 on my Debian system and then somehow upgrade to 2.0?


Can I have two different versions of BT Sync and they will work without any issues?


I have UPnp enabled on my router


I see these entries when doing a netstat -nap


udp        0      0



I see this in my sync.log file:


UPnP: Unable to map port with UPnP



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This line means that port cannot be mapped just via UPnP protocol. but there are other means to do that, so it shall be not critical. 

The critical thing is that 1.3 and 2.0 are not compatible. if you want to use older version of Sync, it shall be 1.4.111 at least.

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