Problems with Simulink library browser

Version 2014a, I'm running a individual student version and I'm having the same problem, or quite similar. When I run the first time, after installation of add-on, it's ok, I have everything. But the second time, when I open the libraries no one appears. I've tried your solution, but it doesn't run, it misses something. I know where the files have been copied, but witch is the current file ?

Fix_Arduino_for_All_Pt1_Admin.m Fix_Arduino_for_All_Pt2_Users.m

Can't run, it gives error: «Error using copyfile No matching files were found.»