Can’t mount shared folder. Protocol error

Hi.
Host: WinXP SP3;
Guest: Debian 5.0;
Problem: Can’t mount shared folder. Mount command return protocol error.
What I did:
1. Successfully installed guest additions on Debian;
2. Made shared folder on host system (called “shared_folder”. D:\Virtual Box\shared_folder);
3. Made shared folder on guest system (called “shared_folder” too. /home/<user_name>/shared_folder);
4. Devices ? Shared Folders… ? I added a path to shared folder on my host system and set a folder name to “shared_folder”;
5. In bash I typed: #mount -t vboxsf shared_folder /home/<user_name>/shared_folder;
6. And recieved an error: /sbin/mount.vboxsf: mounting failed with the error: Protocol error.
Questions:
1. Does this feature works?
2. What I do wrong?
3. What is the reason of Protocol error?
4. How can I fix it?
Tnx.
Jean Jacques Linux
Host: WinXP SP3;
Guest: Debian 5.0;
Problem: Can’t mount shared folder. Mount command return protocol error.
What I did:
1. Successfully installed guest additions on Debian;
2. Made shared folder on host system (called “shared_folder”. D:\Virtual Box\shared_folder);
3. Made shared folder on guest system (called “shared_folder” too. /home/<user_name>/shared_folder);
4. Devices ? Shared Folders… ? I added a path to shared folder on my host system and set a folder name to “shared_folder”;
5. In bash I typed: #mount -t vboxsf shared_folder /home/<user_name>/shared_folder;
6. And recieved an error: /sbin/mount.vboxsf: mounting failed with the error: Protocol error.
Questions:
1. Does this feature works?
2. What I do wrong?
3. What is the reason of Protocol error?
4. How can I fix it?
Tnx.
Jean Jacques Linux