Does anyone know how I can combine the hammer, bucket of nails and planks so I can repair the ladder? I've combined the hammer and the bucket of nails, but the game won't let me combine those combined items with the planks.

Edit: this is for Tesla Effect, BTW.

You need 5 planks before you can combine them with the rest. Do you have them?

there's one to the left of the bridge and one more in the water on the far left of the bridge, maybe you missed one of these?
oh, be sure to climb on top of the shed at least once before picking up the ladder.

OK, thanks, I've got it now. The inventory picture threw me, since it showed five planks.