I have a few variants of Amazing Spider-Man (6th Series) #1 that aren't in the database. I click in the far left column to highlight the row, then right click and select "Submit New or Corrected Data". I have also tried clicking on Internet in the menu bar and selecting "Submit New or Corrected Data" there with the row highlighted. I have also tried with just one row selected, and with multiple. Same result every time: the green status bar pops up and starts moving, followed immediately by the attached error message.