dovecot - Mar 2016 - State for dsync not working.

Hello,  

Since replication does not seem to work on Mac OSX, I will run doveadm sync by
hand every few minutes.

In order to improve efficiency, I would like to use state.  I have tried a few
ways, but I always get the following error
doveadm(user): Error: Saved sync state is invalid, falling back to full sync:
Invalid base64 data
KBtMOd0181bQ/wAAoQsxE90181YBAAAAAQAAAAAAAAAAAAAAAAAAABtI+mg

Here is the code I use to sync :
for user in $userlist ; do
        doveadm  sync -u $user  -s
"/Users/_dovecot/.bin/syncStates/syncstate$user" tcp:xxx.xxx.xxx.xxx
> "/Users/_dovecot/.bin/syncStates/syncstate$user"
done

Any idea on how I can correct the encoding error ?

Thank you