Entity Framework + MySQL connector = null reference exception on insert (no replies)

I used ADO's EDMX visual designer to create one table Test with one Column TestId that is a Guid and also the Entity Key

I autogenerate the table creation scripts and it gives me this relevant section:

CREATE TABLE `Tests` (
`TestId` CHAR(36) BINARY NOT NULL
);

ALTER TABLE `Tests`
ADD CONSTRAINT `PK_Tests`
PRIMARY KEY (`TestId` );

so far so good....my application code looks like this:

using (var foo = new TestModelContainer())
{
var test = new Test() {
TestId = Guid.NewGuid()
};

foo.Tests.AddObject(test);
foo.SaveChanges();
}

at the SaveChanges step, I get a NullReferenceException with the following stack trace:


System.NullReferenceException was unhandled
Message=Object reference not set to an instance of an object.
Source=MySql.Data.Entity
StackTrace:
at MySql.Data.Entity.SqlGenerator.GenerateReturningSql(DbModificationCommandTree tree, DbExpression returning)
at MySql.Data.Entity.InsertGenerator.GenerateSQL(DbCommandTree tree)
at MySql.Data.MySqlClient.MySqlProviderServices.CreateDbCommandDefinition(DbProviderManifest providerManifest, DbCommandTree commandTree)
at System.Data.Common.DbProviderServices.CreateCommandDefinition(DbCommandTree commandTree)
at System.Data.Common.DbProviderServices.CreateCommand(DbCommandTree commandTree)
at System.Data.Mapping.Update.Internal.UpdateTranslator.CreateCommand(DbModificationCommandTree commandTree)
at System.Data.Mapping.Update.Internal.DynamicUpdateCommand.CreateCommand(UpdateTranslator translator, Dictionary`2 identifierValues)
at System.Data.Mapping.Update.Internal.DynamicUpdateCommand.Execute(UpdateTranslator translator, EntityConnection connection, Dictionary`2 identifierValues, List`1 generatedValues)
at System.Data.Mapping.Update.Internal.UpdateTranslator.Update(IEntityStateManager stateManager, IEntityAdapter adapter)
at System.Data.EntityClient.EntityAdapter.Update(IEntityStateManager entityCache)
at System.Data.Objects.ObjectContext.SaveChanges(SaveOptions options)
at System.Data.Objects.ObjectContext.SaveChanges()
at EFMySQL.Program.Main(String[] args) in C:\Users\david.pio\Documents\Visual Studio 2010\Projects\EFMySQL\EFMySQL\Program.cs:line 40
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException:


Any ideas?