Photoshop :: CS6 Plugins Not Appearing When Clicked Under Extension Dropdown Menu

my default extensions that come with photoshop cs6 extended and also custom installed plug-ins won't appear when clicked on.  Usually you see a checkmark by the plug-in if it is working and is visible on the photoshop layout as a panel.  I have tried uninstalling and reinstalling, which the Kuler extension worked, but only under the workspace that I opened it up for.  So for example, I opened it up on Essential workspace, but it wouldn't appear when changed to painting workspace.  When I close the panel from the workspace, it won't ever come back up again even when clicked on under the extension drop-down menu on any workspace.  This is occurring not just on my desktop, but also on my laptop.  Both are not Photoshop CC, but regular Photoshop CS6.
 
I don't really mess around with the extensions much, but once I found out about the painters wheel plugin, I really wanted to try it out, hence now noticing this extension issue with my plug-in..All my plug-ins appear on the drop down menu for Windows > Extensions, so it shouldn't be a file placement problem.  I have also tried the Adobe troubleshoot for plugins by uninstalling my plug-ins to see if third party plug-ins were the problem, but still my default plug-ins won't even work.