Please keep the following links in mind when posting for help. In most cases it will be benificial to post log files from the client or the server in getting something fixed.
The location of the Client Log
C:\Documents and Settings\%username%\My Documents\Multiverse World Browser
On Vista and 7
C:\Users\%username%\Documents\Multiverse World Browser
This and other information regarding the client are available at: http://update.multiverse.net/wiki/index.php/Client_Logging Server Logs
are located based on your install folder and by default in "mv-home/logs/".
This means that if you installed the Server to c:\multiverse the log files would be c:\multiverse\log
This and other information regarding Server config and log files are available at: http://update.multiverse.net/wiki/index.php/Server_Logging#Log_files