It appears with a recent DSM upgrade Synology has decided to add a new feature adding support for NFS V4. When they add a new feature, synology has a bad habit of enabling new feature by default. 
As is with the case with NFS V4 support.
Anyways this recently happened to me. I was unable to browse NFS when adding a source. Digging around I compared the wiki shots to my DSM version and sure enough a new feature was present. In order to fix NFS support on the latest Synology NAS (I'm running a DS413 - DSM Version: 4.3-3810) and be able to browse NFS from within XBMC, support for NFS V4 needs to be disabled/turned off and NFS browsing will work once again.
Screenshot(s) below:
BE SURE TO DISABLE SUPPORT FOR NFSv4!
As is with the case with NFS V4 support. Anyways this recently happened to me. I was unable to browse NFS when adding a source. Digging around I compared the wiki shots to my DSM version and sure enough a new feature was present. In order to fix NFS support on the latest Synology NAS (I'm running a DS413 - DSM Version: 4.3-3810) and be able to browse NFS from within XBMC, support for NFS V4 needs to be disabled/turned off and NFS browsing will work once again.
Screenshot(s) below:
BE SURE TO DISABLE SUPPORT FOR NFSv4!
