Hi,
It seems that whenever my 18-55mm is within the range of 18-33 it doesn't allow me to take a photo and this warning goes across my Canon T3i's screen;
Err 01
Communications between the camera and lens is faulty. Clean the lens contacts.
I think I've done that, but still it won't let me take a photo within that length. Please help in this if you would, I appreciate it 

