Hello KrautOS.  Here's some of my setup info, please let me know if you need more details. Thanks.

vmhost: 
vSphere 5.5

vmmachine (nfs-server):
>uname -a
Linux xxx 3.11.0-18-generic #32-Ubuntu SMP Tue Feb 18 21:11:14 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
>lsb_release -a
Distributor ID: Ubuntu
Description:    Ubuntu 13.10
Release:        13.10
Codename:       saucy
>pvdisplay
  --- Physical volume ---
  PV Name               /dev/md0
  VG Name               RaidVG
  PV Size               3.63 TiB / not usable 4.81 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              951549
  Free PE               0
  Allocated PE          951549
  PV UUID               EIJ1f2-N30Y-TRRk-dkW7-qtqC-MgIx-UXyx4n
>vgdisplay
  --- Volume group ---
  VG Name               RaidVG
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  2
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                1
  Open LV               1
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               3.63 TiB
  PE Size               4.00 MiB
  Total PE              951549
  Alloc PE / Size       951549 / 3.63 TiB
  Free  PE / Size       0 / 0   
  VG UUID               vfKSY2-RbHq-ZXih-EGXD-JCYw-IKEq-7J2DZZ
>lvdisplay
  --- Logical volume ---
  LV Path                /dev/RaidVG/NFSLV
  LV Name                NFSLV
  VG Name                RaidVG
  LV UUID                Ykdggh-D769-sQmp-ilzL-1bpL-a8eF-MEOvqw
  LV Write Access        read/write
  LV Creation host, time nfs-server, 2014-03-02 12:54:24 -0700
  LV Status              available
  # open                 1
  LV Size                3.63 TiB
  Current LE             951549
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           252:2
>/etc/fstab
/dev/mapper/RaidVG-NFSLV                  /srv/nfs        ext4     defaults          0       2
/srv/nfs                                  /srv/nfs        ecryptfs defaults          0       0
/dev/mapper/cryptswap1                    none            swap     sw                0       0
>package versions (amd64):
mdadm 3.2.5-5ubuntu2
lvm2 2.02.98-6ubuntu1
ecryptfs 103-0ubuntu2
nfs-kernel-server 1:1.2.8-2ubuntu2
>/etc/exports
/srv/nfs 192.168.2.0/25(secure,rw,sync,wdelay,hide,no_subtree_check,secure_locks)
>exportfs
/srv/nfs        192.168.2.0/25
>syslog
kernel: [   14.559732] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
kernel: [   14.584691] NFSD: starting 90-second grace period (net ffffffff81cd2dc0)
rpc.mountd[1209]: Version 1.2.8 starting

nfs-client:
>/etc/fstab
nfs-server:/srv/nfs     /mnt/nfs   nfs4    rsize=8192,wsize=8192,timeo=14,intr       0        0
>package versions
nfs-common          1:1.2.5-3ubuntu3.1
>sudo showmount -e nfs-server
Export list for nfs-server: 
/srv/nfs 192.168.2.0/25
>sudo mount /mnt/nfs
mount.nfs4: mounting nfs-server:/srv/nfs failed, reason given by server:
  No such file or directory
> nfs-server syslog
nfs-server rpc.mountd[1209]: qword_eol: fprintf failed: errno 22 (Invalid argument)
nfs-server rpc.mountd[1209]: Cannot export /srv/nfs, possibly unsupported filesystem or fsid= required

I have done numerous tests including mounting non-encrypted, non-root directories successfully.  After all the tests my only conclusion was that it was due to the fact the directory I was trying to export is encrypted.  Also I've verified encryption in that directory works properly.  Only NFS won't work.  I've tried SSHFS and SAMBA successfully.

Any feedback is appreciated, thank you!