File sharing from standard client fails: Obsolete file transfer message downice; please upgrade your client.

[alci63]

Trying to share a file with a user from the web UI fails. It will ask the target user to accept or decline the file sharing, but when accepted the file transfer is cancelled with:

"We have offered to send a file called "myfile.sql" to user franck.

Cancelled: Obsolete file transfer message downice; please upgrade your client."