I am using VS2010 and in all of my projects \"My.Resources\" is available and shows all the files that are in the \"resources\" section of the project. In this one project I
Fütemire described my problem. I had just "cleaned up" some unused files in both the resources (doing an Open My Project within VS) and probably (I must admit), I deleted some files directly from the Resources folder outside of VS. Oops.
I just opened Resources.resx file and found two items that red underscores, indicating it couldn't find these files. I removed those data blocks within the XML file and that fixed the problem for me. Thanks.