Tried to use CCM to craft rubber but got this:
Rubber: This machine has not enough pipe input or output slots to assign this recipe. Required inputs: 2, Required outputs: 0

UPD: Same with default CM. Deleted CCM mod and it fixed the problem.

UPD2: Rubber recipe works for CM with CCM mod installed even if you have CCM in your inventory or placed it somewhere but once you used CCM it breaks the recipe.

UPD3: You can still have and place CM with rubber recipe if you previously saved it as part of a blueprint with Duplicationer mod or by copying with settings (Ctrl+Q).