.net – Currently targeted framework does not include System.Design. VB.NET

Start debugging, as soon as you've arrived at a breakpoint or used Debug > Break All, use Debug > Windows > Modules. You'll see a list of all the assemblies that are loaded into the process. Locate the one you want to get debug info for. Right-click it and select Symbol Load Information. You'll get a dialog that lists all the directories where it looked for the .pdb file for the assembly. Verify that list against the actual .pdb location. Make sure it doesn't find an old one.

In normal projects, the assembly and its .pdb file should always have been copied by the IDE into the same folder as your .exe, i.e. the bin\Debug folder of your project. Make sure you remove one from the GAC if you've been playing with it.

I am having the same issues with VS 2012. I am not sure how to fix it but after spending quite a bit of time on it here is what I see is happening.

1. Over all your/my system is at mysql.data.dll version 6.9.9.0. I am not able to downgrade this to 6.9.8.0 When I do I create other version problems with mysql.data.dll that seem to be unresolveable with my knowledge level.

2. I chased down all 6.9.8.0 versions of the DLL and removed them, ensuring that there was a 6.9.9 version in its place. Once I have done this I am not able to add a data connection to a MySQL Database. When I try I get the error An error occurred that is normally caused by not having Visual Studio properly installed. In addition non of the previously defined data connections work.

3. Not having MYSQL-connector-net-6.9.9 installed gives an error of "Cannot obtain provider factory for data provider named MySql.Data.MySqlClient" and you don't even get to the error described above by the OP.

   4. I have tried various connector-net versions and this does not fix the problem.

I have no references to 6.9.8.0 in any of my projects but clearly for some reason VS needs it to create the data connections.

Update:

I removed MySQL, then went through and deleted all mysql*.dll and all config files. I then used the MySQL Installer 5.7.14 found at http://dev.mysql.com/downloads/installer/

The installer still installed the mysql.data.dll version 6.9.8.0 and it still causes the error.

Update: The problem is with MySQL Connector / Net. It is using version 6.9.9.0 of the DLL and everything else is using 6.9.8.0 Go to your community installer and uninstall connector / net. Then go to https://downloads.mysql.com/archives/c-net/ and get version 6.9.8 of the connector / net. Install this and everything should be fine. It has worked on my system.