Hi. Today I tried running btsync on said NAS and well... it doesn't work. uname -a sais: Linux MyBookWorld 2.6.24.4 #1 Thu Apr 1 16:43:58 CST 2010 armv5tejl unknown I downloaded and extracted the binary, granted it the correct permissions and it runs good until I try to open the webui. It loads incompletly (fails to load all the images and css and js files) and then btsync crashes. I enabled debugging but the only thing that appears in the log is this: [20130327 19:35:19] NAT-PMP: Unable to map port with NAT-PMP. That's weird, because I forwarded the port to the device myself and disabled automatic port mapping in the config: { "device_name": "My Sync Device", "listening_port" : 8888, "check_for_updates" : true, "use_upnp" : false, "download_limit" : 0, "upload_limit" : 0, "webui" : { "listen" : "0.0.0.0:8888", "login" : "admin", "password" : "password" } } I can confirm the port is forwarded correctly, because I can acces the webui from a remote computer. Is there anything I can try to make it work? I'd really like to set up a connection between two NAS devices and use it as offsite backup