I assume you were using V9 before and now your using X. Even when you picked E for endpoint, you still had to pick the end point of some geometry. With the Autocursor active, you simply move your cursor over the endpoint you want and your cursor should change to show it's selecting the endpoint of the geometry. Just click it. If you want the Origin, just hit "O" and your should get the Origin (X3).
If your not getting the Origin, go to the AutoCursor bar (where you put in the X Y Z coordinates) and click on the " ! " (config) and check the box that says "Enable Power Keys".
For more information go to help and type in "Power Keys" then select "Autocursor Settings" (on the left). This will give you more information about the Power keys.
Mike Mattera
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