(subsonic) problem with deleting rows (my table contains Deleted column)

I have a table named 'Test' contains

• i开发者_开发知识库d int
• name nvarchar
• Deleted bit

columns.

First i install subsonic in my project using sql server 2000. where i try to delete some rows, it throw object null exception for me on line:

repo.Update(); //object reference not set to...

I config subsonic again with sql server 2008, Now when i try to delete row, it work fine! even when i change connection string to sql 2000.

But my current problem is:

When i try to delete some rows that does not exists with lambda expression like below it threw a new exception:

Test.Delete(a=>a.id==100); //it doesn't exists!
//...
repo.Update();
//ExecuteNonQuery: CommandText property has not been initialized

I use VS2008, sql2008 & sql2000 and subsonic 3.0.0.4