I'm working thru a tutorial and have gotten to polygonal modeling but can't get 'extrude face' to work. i select the face and when i pull the blue arrow, it moves but when i let go, it returns to the original position. I've no problem extending the other two directions. No error message appears.
discovered the problem...quite simple to resolve but not too obvious. my manipulator tool was quite small--i guess that it is the default size from installation. i realized that in my tutorial book pics it was much larger. once i was able to enlarge the tool, i could then see that the arrow and the cube pertaining to each handle were separate elements. once i separated them, i was able to pull the blue arrow without the cube, therefore solving the problem. thanks much for your response!