I'm getting this error on the client:
[root@localhost /]# mount -t nfs 192.168.18.144:/linuxcast-nfs /mnt/ mount: wrong fs type, bad option, bad superblock on 192.168.18.144:/linuxcast-nfs, missing codepage or helper program, or other error (for several filesystems (e.g. nfs, cifs) you might need a /sbin/mount.<type> helper program) In some cases useful info is found in syslog - try dmesg | tail or so
I don't understand the error. Does the client need additional configuration?