Bitlocker & AD

Having an issue running the scripts in "Configuring AD to Backup Bitlocker
and TPM Recovery Information.exe".

I have tried , without success , to extend the schema.

I am logged in as Administrator

I created a cmd file to run ldifde with the required switches.( Replacing
only the dc=mydomain,dc=mysite bit)

Every time I run the cmd file I get
1: CN=ms-TPM-OwnerInformatio,CN=.....
"Object does not exist, entry skipped"
2: CN=ms-FVE-RecoveryGuid,CN=...
"Object does not exist, entry skipped"
3.BN=ms-FVE-RecoveryPassword,CN=....
"Object does not exist, entry skipped"
4: (null)
Entry modified succesfully
5:CN=ms-FVE-RecoveryInformation
Add error on line 111: No Such Attribute
The server side error is "The parameter is incorrect."
1 entry modified succesfully.
an error has occurred in the program.

No changes have been made to the MS supplied ldf file.

Help.