Hello Toms,
Innovator Server and Innovator Vault URLs must be full specified.
For example "http://MyMachine:8880/InnovatorServer/Server/InnovatorServer.aspx" and "http://MyMachine:8880/vaultserver/VaultServer.aspx".
405 HTTP error means "Directory listing is denied".
Also as far as I remember password must be MD5 encoded. Not just plain "innovator".
Hope this helps.