Corrupted plug-ins layouts, how to reset?

Hi everyone, 

I'm having a hard time here with the plug-in manager, 

I'm installing a bunch of licences I forgot to install when building my system initially a few weeks ago... my newly added plugins are detected in the manager, but are NOT added to the default (all plug-ins) layout. 

More than that, a few of them don't have the ENABLE AS PLUG-IN or ENABLE AS SYNTH, ticked by default, so I have to enable them manually ...quite painful.... (and not normal!) 
and my licence of Izotope Stutter edit does not show up "as synth" as in it's option settings. 
it's as if my plugin manager was stucked in a state where it does not change to reflect the new plugins and settings.

Is there any way to actually completely erase and rebuild the default plug-ins layout?
I would prefer avoiding building a custom layout, and dealing with it everyime I try a new plugin... 

I tried deleting the default.pgl in the roaming\Cakewalk\SONAR X1 Producer\Plug-in Menu Layouts ... no help.. 

Your help is more than welcome ! Thanks in advance ! 

V