I am new to InDesign (CS6) and I think I accidentally used a keyboard shortcut that I didn't intend to use. I think, not sure, it involved alt+shift+ctrl and a letter. I actually tried to paste in position with ctrl+alt+shift+v. Now all my images are gone and all that is left are empty frames (I think they're empty- they have crosses going through). Please help me.
Did you try command+Z? Undo!