The pop singer used crowd-funding website Indiegogo.com to fund the movie he co-wrote last year (13) and brought in $85,000 (£56,667) to cover the production costs.
The project suffered a major setback last July (13) when the director died suddenly, but Carter vowed to press onwards.
However, the film has now been hit with another delay due to Carter's other commitments.
Production will not begin until January, 2015 because the singer is too busy touring with his boyband until July (14).
In a series of posts on Twitter.com, he writes, "Oh and just a quick update. Evil Blessings is getting finishing touches done to the script. We are looking to begin shooting in January... With the busy schedule and success of the Backstreet Boys tour it has made it difficult to set a solid date this year for filming...The good thing is that it has given me time to perfect the script. I want this project to be the best it can be for you."
Backstreet Boys: Show 'Em What You're Made Of is in cinemas nationwide for one night...