Peter Teschner tells TMZ … there were several screenings of the historical drama during the editing process … but he doesn’t remember a screening where music was missing. According to Peter, they always had music in the film for screenings … including original songs by Pharrell Williams, as well as a temp score.

This directly contradicts Glen’s claim, which he made on the “Therapuss with Jake Shane” podcast a couple weeks ago.

Remember, the actor said he threw up after watching a rough cut of the movie without special effects or music … saying he feared he had ruined the movie with his performance.

While Peter says it’s entirely likely Glen freaked out about his performance, he doesn’t recall a single instance where a screening was THAT rough.

He also doesn’t agree with Glen’s point that effects added later on made the movie a lot better. Per Peter, Glen’s rough cut scenes versus his final cut scenes weren’t changed much at all … stating the actor’s performance was great.

The movie came out almost 8 years ago … so, perhaps Glen is misremembering how things went down???