Why a mesh deforms when I apply Curve modifier? I need to move a mesh along a curve. I followed the steps in this tutorial: http://www.youtube.com/watch?v=4z0AD_iXr1I  because is very similiar to what I want to do, but when I apply the curve modifier my mesh deforms. These are the screenshots before and after:





Thanks for your help!
There are several problems:


The origins of the curve and the object need to be in the same place.
The cylinder is rotated slightly, try rotating it so that it is horizontal.
The curve is scaled and rotated. You can fix this by pressing CtrlA> Rotation &amp; Scale with the curve selected.


Result: