Hi, Thanks to the mail from Erik Peterson on the basex client implementation, I learned that the client protocol has been updated and that 'replace/store' have been renamed to 'put/putBinary'. In my RBaseX-client, I used the 'retrieve' command to read binary data. I can't remember where I found that 'retrieve' was used for retrieving binary data. But while implementing 'put/putBinary' I noticed that 'retrieve' is no longer accepted as command. I have added a remark on this to the Clients page. Ben Engbers PS. RBaseX is loaded on average 10 times a day. I have never had any feedback on this package so I don't know in howfar it is really used. Any feedback is welcome!