I created a wsp in Visual Studio 2012 in my Dev server, I copied the file in my Prod server
(C:\Program Files\Common Files\microsoft shared\Web Server Extensions\15\BIN folder)
and I ran successfully in a command prompt with local admin privileges:
stsadm.exe -o addsolution -filename "solutionname.wsp"
From the central admin on Prod server ("manage farm solutions") I deployed the solution.
Problem: when I try to open the URL
http://servername/_layouts/15/solutionname/page.aspx ... "the webpage cannot be found".
The above process used the work perfectly in SharePoint 2010 but it doesn't work in SharePoint 2013. Do I miss something?