After a dispute with actor Ryan Reynolds on the creative direction of the next Deadpool film, Tim Miller has walked from his position of director.

Deadline reported that Miller has left production of the next Deadpool after a “series of creative differences”. Miller had apparently been developing a script, and hoped to get back behind the camera by 2018; however, he wasn’t officially signed on with a contract. The nature of the differences was not specified.

Deadpool was a massive success, and was the first of Fox’s R-Rated movies, with the recently teased Logan being the second, which comes out next year. It made $782 million worldwide, which is even more impressive considering the budget was a mere $58 million.

In June this year, the script for Deadpool 2 was nearing completion, from writers Rhett Reese and Paul Wernick, who worked on the first film, and shooting was supposed to start in early 2017. However, with Tim Miller walking out, we might not see production start until the end of next year.

Guardians of the Galaxy director James Gunn offered his thoughts on Twitter:

Guardians of the Galaxy 2’s trailer was recently released too, showing off some higher stakes, and a weird bro moment between Draxx and Starlord.

It’s unclear what’s happening with Deadpool right now, but hopefully this won’t hurt production too much, and we’ll see a trailer at some point next year.