What's the trick to accessing NFS shares with Android XBMC?

Hi, hoping someone can help me here:

I've been running XBMC quite well on my ATV2 for a while and recently I got an MK808B Android stick that I've installed XBMC on it. I've tried both the RC2 build and today's experimental build with hardware acceleration (this stick runs the Mali400 GPU). For the life of me, I can't get access to the NFS shares on my server. I've tried browsing, and it can see the top-level share folders but it can't navigate into them. I've also tried inserting the same exact share definition that my ATV2 has in sources.xml into the Android's sources.xml, and I still can't access it. In other words, the same share that works flawlessly in iOS won't come up in Android. Any ideas?

This is a Windows 2008 Server running the Windows native NFS server. According to the Windows Event Viewer the shares are getting correctly mounted when I try to browse them in XBMC, but I get nothing in XBMC.

I've seen the XBMC wiki and apparently Android NFS should be working since Beta 3? Any ideas on how I can troubleshoot this?

Thanks!