Although it is found on plugin initial scan, EZDrummer does not appear in the plugin available list.
When I open a previous recorded song that includes EZDrummer, it appears normally thoug.
Can someone help me with this issue?

Make sure the plug-in layout is set to "Default All Plug-ins". To see which layout is being used click on "B" in the illustration below http://www.cakewalk.com/D...p;help=Browser.07.html on the Plugins tab in the browser

 

Plug-in layout was set to 'Default All Plug-ins', and EZDrummer still does not appear. Its .dll is in the right place,
I have uninstalled and reinstalled this plug-in several times, scanned and re-scanned for new plug-ins but it seems to be in vain.
As I said before, if I open a previous song in which EZDrummer was used it opens normally, but still does not appear in the available plug-in list and thus won't open for a new song
 

Make sure EZDrummer is in the "VST Instruments (VSTi)" section of the Cakewalk Plug-in Manager. If it is not listed, click the "Show Excluded" radio button at the bottom left. If it is in the excluded list, click the "Enable Plug-in" button.

Unfortunately I've been there already but EZDrummer still does not appear! Mistery. I manage to see during the scanninc process EZDrummer dll being written on my screen but Sonar X3 does not show it in any possible plug-in list.

Is this an old version of EZdrummer? If so, it will not show up as EZdrummer in the plug-in list, it will show up as "Dfh sampler".  This is due to a change in how the scanner determines the plug-in name. This behavior is controlled
 by a cakewalk.ini variable VSTPlugInNameFormat see here http://www.cakewalk.com/Documentation?product=SONAR%20X3&language=3&help=INI_Files.4.html for more info about the variable settings. The latest version of EZdrummer v1.3.3 shows up as EZdrummer in the plug-in list with the default VSTPlugInNameFormat setting.

Thank you very much. Problem Solved!