ContextCSN showing Junk Characters

[scn_73]

Hi,

My ldapmaster ContextCSN showing Junk Characters. Please advice how can reset 
to valid one.

contextCSN:: 0CKRuTQrAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
CentOS 5.8Openldap Version is OpenLDAP: slapd 2.3.43

- Sachin