I have ODP.NET installed using ODAC 32bit on a machine with Devart dotConnect for Oracle installed.
http://www.oracle.com/technetwork/topics/dotnet/utilsoft-086879.html
Got the error when adding a ADO.NET Entity Data Model...\New Connection:
Click the 2nd time to get the same issue. However the 3rd time shows Devart screen:
ODP.NET is working fine on a machine without Devart dotConnect installed. Any idea please?

