In Dynamics NAV 2013R2, 2015, 2016 (and properly also 2017) the good old NTimer.DLL is gone. Both the old automation controller and the DotNet version.
To get a timer on a page, you must use the PingPong addon.
Read more here: https://msdn.microsoft.com/en-us/library/jj551782(v=nav.90).aspx
