My snap to grid, object, etc. were working fine yesterday, however today they no longer seem to function. I've adjusted all snap to settings, hid/shown the grid, added objects to snap to, nothing seems to work. Is there a hidden option or something that I'm missing that could override and disable all snapping? Even in new documents it still acts as if there's nothing to snap to, when I add a grid or anything else that would normally snap just fine.
Try the snapping panel, View->Snapping->Edit Snapping (CTRL+/). Roll down advanced. Enabled vertical and horizontal center alignment snapping checkboxes. See if snapping now works. Also try moving the object you want to snap to the opposite side (or just far away and in a different position in general), then return to the object you're trying to snap to. I find this suddenly starts the snapping engine as well (the dotted lines appear).
You were correct. I wonder why the snapping engine as you called it simply stopped like that out of nowhere. Thanks for your assistance!
You're welcome and good luck!