centos guest shows shared folder empty
 

I don't know why centos shows my shared folder empty when it's full of project folders
These are my VM setup:

HOST: windows 7 ultimate 32bit
GUEST: CentOs 6.3 i386
Virtualization soft: Oracle virtualBox 4.1.22
Networking: NAT -> (PORT FORWARD: HOST:8080 => GUEST:80)
Shared Folder: centos

shared folder is set to mount automatically in the boot and my user(root) and apache are members of vboxsf group

I looked at /etc/rc.local and it contains

touch /var/lock/subsys/local

But somebody says it should contain something like:

mount.vboxsf -o uid=500 -o gid=500 <sharename> <sharedirectory>

any idea?

it was working properly recently but suddenly it stops functioning

I noticed that the actual mount statement exists at /etc/rc.d/rc.local and leave the rc.local as it was

so the mount statement is at it's place and folder is mounted automatically so what's wrong here

please help

I'm guessing for some reason centos can't see folders in shared folder and VM is working as it should so folders is created in windows7 and not centos. if i type mkdir test and refresh windows i can't see the test folder in windows so windows can't see centos created folders and centos can't see windows folder. i'm lost