I had the same problem and managed to reactivate the cheat mode toggles kinda by accident. When you open the inventory GUI, you'll see the OPTIONS button in the bottom left as usual. Click on that. At the top right of the options screen is a button that says GLOBAL. Click that (it changes to 'WORLD') then click on the Inventory button and you'll see the normal options but with a bunch of W's next to them on the left. Right click Left click on the "W's" to activate them. This will override the lockout on cheat mode. Go back one page and change the NEI option back to 'GLOBAL' (not sure if that part is necessary, but it's what I did). When you exit out of the options the inventory screen should now show the cheat mode, magnet mode, etc., options available. They look a bit different then they did before the update, but they seem to be working the same.
Spacenerd reacted to MikehellRS in NEI Cheat mode won't work