Timber removed 1.1.4 from the WP.org so I hope this doesn't affect too many users.
In the mean time we're looking for a fix as well as including latest Timber to Gantry 5 itself as a library, which will allow us to test compatibility with future Timber releases before we ship the update to the users. Actually all of this has already been done, but we need to do some testing to make sure everything works.