[cvsnt] Audit on MySql

[AD]

Hi all,
I am testing audit on MySql using

Server
Open Source CVSNT 2.5.03 (Scorpio) Build 2382
MySql  Server 4.1

Client
TortoiseCvs 1.8.29 - (CVSNT) 2.5.03 (Scorpio) Build 2260 (client/server)

Plug-in Configuration OK (Connection Ok and Creation Tables Ok)
When I make some commands as Edit a file I receive this message:

Audit trigger initialiasation failed: Open failed: Client does not support 
authentication protocol requested by server; consider upgrading MySQL client
cvs server: Pre-command check failed

Can anyone give me an explanation of the problem ?

Thank you in advance