Hi Scott,
When you try to log on which Database driver are you selecting?
Current version no longer have a Native Informix driver so you have to select ODBC or OLE DB or possibly JDBC.
when you try to connect which driver are you selecting?
Logs show it's trying to use XML or JDBC.
If that's is the case then hit the F1 key and follow the info on how to configure a JDBC driver.
Don