Row not found or changed LINQ C# error on simple statement

Question

First of all, there is no chance that this is a multi-user issue, as I\'m working locally on a dev version of the database.

I am getting the not very explanatory R

Answer 1

I had this issue even when the database schema and dbml matched exactly. The issue was I was trying to change an entity and insert entities in a single SubmitChanges statement. I fixed it by doing SubmitChanges on each operation instead of all at once.

This was all in a transaction scope so that may have something to do with it but I'm not sure.