In this case, X1 and X3 use the same VST Inventory in the registry. If the X3 plug-in layout is set to "Default All Plugins", and the plug-in is visible in X1, it should be visible in X3.
 
When updating to X3 were these instructions followed?  http://www.cakewalk.com/S...ommended-for-Upgraders

Yes I did that scan over 5 times and I just did it 2 more times.  I read the two other link but, it's alot for my small head to take.  So, I will go back tomorrow to read it again and try something else I didn't do yet.
Thanks for the support scook ( I hope Santa clauss will be good with you this year)

Muzock
Yes I did that scan over 5 times and I just did it 2 more times.  I read the two other link but, it's alot for my small head to take.  So, I will go back tomorrow to read it again and try something else I didn't do yet.
Thanks for the support scook ( I hope Santa clauss will be good with you this year)

If the problem scook references is the issue, scanning alone it not enough. You need to scan and reset. I have GR4 and 5 working in my system so i know it's possible.

Holy man!!!  I can't believe but, it's there and maybe since the first day.  I just finish to read again about another way to make the VST come back.  I opened my computer but before starting to make any move, I decided to make a search (again) with the mouse every where.  And there was a small Konplete6 down on an arrow.  My set up is a little labyrinth and it's a little bit macho to say that but, here, in the house my wife take care of putting every thing at his place...but, she don't know how to open the computer in my studio LOL
 
  Next time, I'll be more carefull before posting a demand on here.  I hate to make people lose their time. 
So, excuse me and, without your support I would have come frustraded to a point.  So now, i can put most of my time on the music without having that bug on a corner of my head.
 
Thank's alot to every one here!!!