VS 2005 Crashes on Expanding a DataSet

I have a small, one form application that I wish to use for editing text
data stored in two database tables.  The data is imported into SQL Server
from Access 2003.



I create a new database DataSource, and all goes well until I want to drag
from the Data Sources view onto the form.  The tree view only shows one of
the tables, the 'master' table, and when I try and expand it to drag fields
onto my form, VS crashes.  It asks about sending an error report, but no
readable error information is given, just a process dump.



How can I even begin diagnosing this?