Unable to access Oracle using ODP

Hello,
I recently installed ODP and am trying to use it to access my Oracle 10g database from a C# Application built with Visual Studio 2005. (I can access the database via OLE with no problem). I've added the proper references and the program compiles fine. The following code failes on the call to ExecuteReader, with the message that the connection must be open. However, the call to dbConn.Open(); is successful, and as far as I can tell the connection is open (I can successfully read the database version number). Any ideas?
OracleConnection dbConn = new OracleConnection(
     "Data Source=myDBAsInTNSNamesFile;" +
     "User Id=myuserid;" +
     "Password=mypassword;");
try
dbConn.Open(); //OK!
catch (Exception)
return false; //Never gets here
OracleCommand cmd = dbConn.CreateCommand();
cmd.CommandText = "Select name from people";
OracleDataReader reader = cmd.ExecuteReader(); //FAILS! Claims connection is not open
//etc.

I'm not using that version of ODP.NET so I'm not altogether certain but your problem seems similar to the one described in this post...
Oracle Technology Network: Forums
After upgrading to ODP.NET 10.1.0.400 existings Apps fail.
..except your post implies that you hadn't previously tried an earlier version, so I don't think it's a problem with the assembly reference version. Still, are you sure that you've got the path references correctly configured? Did you try rebooting after the installation and setup? Also, just curious...are you encountering this problem with both win forms and asp.net applications?

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