Playing version 41.45 I generated a new sandbox game and I found I am unable to open any of my canned food (other than the corned beef for some reason), anyway this is quite annoying as it should not require any level of skill to use a can opener on a can, and I have no "fresh" food around to eat. None of the methods of opening cans work, right clicking the can opener shows the options: "Drop", "Equip" & "Favorite" and the same for the canned foods (besides equip). Going into the crafting menu I found I could open a can of corned beef, however none of the other cans showed that I had any to open.