Running Desktop2.0 (not beta) On windows 7 Home premium 2gb ram

Error information below

Debug message: invalid request: unable to modify attr: zimbraCreateTimestamp

Exception:

com.zimbra.common.service.ServiceException: invalid request: unable to modify attr: zimbraCreateTimestamp
ExceptionId:sync-timer-dir:1287845883249:4e7364fffc74ebc4
Code:service.INVALID_REQUEST
at com.zimbra.common.service.ServiceException.INVALID _REQUEST(ServiceException.java:260)
at com.zimbra.cs.account.offline.OfflineProvisioning. validateIdentityAttrs(OfflineProvisioning.java:162 8)
at com.zimbra.cs.account.offline.OfflineProvisioning. modifyIdentity(OfflineProvisioning.java:1708)
at com.zimbra.cs.account.offline.DirectorySync.syncId entity(DirectorySync.java:355)
at com.zimbra.cs.account.offline.DirectorySync.syncAc count(DirectorySync.java:236)
at com.zimbra.cs.account.offline.DirectorySync.sync(D irectorySync.java:175)
at com.zimbra.cs.account.offline.DirectorySync.syncAl lAccounts(DirectorySync.java:137)
at com.zimbra.cs.account.offline.DirectorySync.access $000(DirectorySync.java:55)
at com.zimbra.cs.account.offline.DirectorySync$1.run( DirectorySync.java:70)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)


Please help