Oracle Windows connection: Some Oracle symbols are not found

I’m truing to connect to an Oracle Database and I’m getting the dabase exception message

Some Oracle symbols are not found. Look in the console for more information.

Here is my connection code with the connection info intentionally obscured

Var db As New OracleDatabase
db.DatabaseName = "(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=************)(PORT=****))(CONNECT_DATA=(SERVER=dedicated)(SERVICE_NAME=********)))"
db.UserName = "*****************"
db.Password = "**********"
db.Debug = 1

  MessageBox("Connected to Oracle!")
Catch error As DatabaseException
  MessageBox("Error connecting to Oracle: " + error.Message)
End Try

I have also tried using the MBS SQL plugin and I get a different message

C:\oracle\product\11.2.0\client_1\bin\oci.dll: %1 is not a valid Win32 application.

DBMS API Library loading fails
This library is a part of DBMS client installation, not SQLAPI++
Make sure DBMS client is installed and
this required library is available for dynamic loading

I’ve searched the Forum, but all I come up with is solutions for Mac users. Anyone here connecting to Oracle via Windows that can offer some help?

I changed the app from 64 bit to 32 bit and the connection now works. Sigh!