setup mcnExtraLayers issues

[Tharindu801]

When I try to run setup_ncbExtralayers.m,

run setup_mcnExtraLayers.m
Warning: Directory already exists.

In vl_contrib (line 91)
In setup_mcnExtraLayers>check_dependency (line 17)
In setup_mcnExtraLayers (line 5)
In run (line 91)
Warning: Name is nonexistent or not a directory: C:\Users\User\AppData\Roaming\MathWorks\MATLAB
Add-Ons\Collections\vlfeat_matconvnet\vlfeat-matconvnet-1e5ae7b\contrib\autonn
In path (line 109)
In addpath (line 86)
In vl_contrib>module_setup (line 257)
In vl_contrib (line 118)
In setup_mcnExtraLayers>check_dependency (line 17)
In setup_mcnExtraLayers (line 5)
In run (line 91)

can give any solutions ?