VS 2010 - cannot add a TODO token - Add is disabled?

Question

Deleting works, but it does not enable the option to Add.

Answer 1

Close the window and reopen it and don't click on any Tokens. You will see the following:

If you click on any tokens before that, ADD button will be disabled.

OR

In your screenshot you have posted, just Rename UnresolvedConflict in the textbox (below Prioity) and ADD button will be enabled.