.NET connector bug with Visual Sutdio 2010?? (no replies)

Hi there,
On my machine I have installed these software:

- Visual Studio 2008 SP1;
- Visual Studio 2010;
- MySQL 5.5.8;
- MySQL .NET Connector 6.3.6.

Everything works well with Visual Studio 2008 SP1 but with Visual Studio 2010 there are some errors when I want to establish connection to MySQL database via GUI called "Add connection":
- If I click on "Test Connection" error is "Unable to connect to any of the specified MySQL hosts.";
- If I click on "Database Name" error is "Unable to retrieve the list of database".

I am sure that "Server name" "User name" "Password" "Database name" are right!! Connection string is same of Visual Studio 2008 SP1!! What is wrong with Visual Studio 2010??

Thx for any help ;-)
Paolo