I get the "cannot load texture for can opener" error every time I run across one. Sorry I can't find the exact error message as it's impossible for me to predict where I'm going to find one...
Regardless, I have found a can opener once by accident by an axe, and when I dropped it on the ground, it was in fact invisible. Others have not reported this issue, but I have verified game integrity on Steam and it has come back with nothing changed.