InstallAware

I've gotten everything to work in InstallAware except for the ODBC DSN that I need to create. Even when I create a new DSN based on one I have that's working correctly, I receive an "Error configuring data source. ODBC error 8 - invalid keyword/pair. Verify that the file exists and that you can access it".I'm not sure I understand the message -- after all, I'm asking Installaware to create the file. This is using a SQL driver, and my file looks like this:
Data Source Name=Transit
Driver Name=SQL Server
Description=EasyRides
Server=(local)\\SQLEXPRESS
Database=ERides
LastUser=SYSTEM
Trusted_Connection=Yes
Can someone help?