JenTer
If you go to Edit, preferences and check the path for plugin layout open that open and see your pgl is saved in that folder. If not do a search on your computer find the new layout you saved an drop it to this folder.
On my computer which is 64bit windows 7 this is the path C:\Users\John\AppData\Roaming\Cakewalk\SONAR X2 Producer\Plug-in Menu Layouts
If you have microsoft excel you can open the file .pgl as an XML and you can verify the plugins in there against the registry settings. Be careful.
The registry setting to these plugins is
HKey Current User
software
Cakewalk Music Software
sonar producer
cakewalkVST X64
Inventory
I have an issue with the Plugin Manager which I have posted in another thread. My plugin ezplayer.dll will not show up when I add it to a folder under cakewalk plugin manager. The path is correct and the plugin is working. My Presonus has no issue with loading as a softsynth. It has to be some type of bug in the plugin manager.
I have created a menu for my plugins which work ok when selected whither its from Track, console, ribbon even ezplayer works if i make it just a vst. I hope to try and resolve this at the weekend when I get back. through the registry. Make a copy of the registry by exporting it out and save on a usb if your going to play around in there.