Ah, I didn't realize I'd accidentally changed something that implied the need for categories.  Got it working now, thanks!

Got this error upon trying to call the crafting scene:

TypeError: Cannot read property 'commandText' of undefined

    at CGMZ_Window_RecipeCategory.drawItem (CGMZ_Crafting.js:3821)

    at CGMZ_Window_RecipeCategory.Window_Selectable.drawAllItems (rmmz_windows.js:1361)

    at CGMZ_Window_RecipeCategory.refresh (CGMZ_Crafting.js:3781)

    at CGMZ_Window_RecipeCategory.initialize (CGMZ_Crafting.js:3742)

    at new CGMZ_Window_RecipeCategory (CGMZ_Crafting.js:3731)

    at CGMZ_Scene_Crafting.createCategoryWindow (CGMZ_Crafting.js:3498)

    at CGMZ_Scene_Crafting.create (CGMZ_Crafting.js:3468)

    at Function.SceneManager.changeScene (rmmz_managers.js:2086)

    at Function.SceneManager.updateMain (rmmz_managers.js:2058)

    at Function.SceneManager.updateMain (CGMZ_Core.js:1456)

Any ideas?