Problem: "Failed to add TableAdapter: Exception has been thrown by the target of an invocation"
Solution: Change to a system font.
Notes: I kept getting this error each time I right clicked on the DataSet/XSD designer and chose any options. While playing around with different fonts I was able to successfully crash out of Visual Studio by adding a new DataSet from the Add New File wizard. I forced WindowBlinds to use a system font across the board and it solved the problem. I couldn't find the .exe that loads the designer to override that one settings by itself.