Why won't Unity show editor extension windows?

So I have been working with Unity for a while and didn’t have this problem until just recently. I use some extension tools, such as Probuilder and Progrids, and I had recently started a new project, but when I installed the extensions, the window options will not show up in the program. It tells me nothing in the console after installtion, so I cant find any script errors, so this has been driving me up the wall. I’ve re-installed them repetitively, and I had Progrids working, but when I closed and re-opened the project, it stopped working. None of my other extentions will show up in the window options either. Does anyone know how I could fix this and get the extensions to work properly?

I have worked with NGUI and 2dToolkit. Once you import the extension package, you need to click on a menu item (file,component, etc) and the extension shows up.