SDK

I am trying to configure a client with the SDK and it absolutely refuses to connect. It is the only machine that we have that will not connect. The configuration appears to be the same as everyone elses but no go. I repeatedly get error -25590 which says "This error indicates that an invalid user ID or password was used to connect to the database server. Redefine a valid user ID and password. This error can also occur if the SCM option is enabled on the database server side but disabled on the client application side, or vice versa. If you wish to use a CSM, make sure that the CMD option is set in the sqlhosts file for both the database server and client application." I know it can't be the first part (I am trying with user Informix) and I don't really understand the second part. Can anyone help? Thanks, CZ Informix DBA (someday)