Its not working Now I tried with versoin 4.0 having same problem my custom plugin not showing under admin listing.
My source code under plugin folder at root and after build it generate dll etc at location Presentation\Nop.Web\Plugins\Url.Redirect
Now when debug the code I get the following error.
maingPluginFile become null for my custom plugin in and condition plugin have wrong directory executed. my plugin setting are perfectly same as other built in plugin have.
//plugin have wrong directory
if (mainPluginFile == null)