After installing 3dcutout and Photoshop script, now you can start 3dCutout by using desktop shortcut. Always use this shortcuts to run 3dCutout and do not execute 3dcutout.exe directly from installation folder.
3dCutout's pipeline is different from what we do inside 3dsmax. We do not create geometry or any other object inside 3dCutout. All content such as characters, objects and background must be create inside Photoshop.