i can't watch a preview

i can't press play to anything if its a composition or in the editor. It won't work in hitfilm 4 express or the 2017 edition. Please help!


  • Standard question: what are your system specs?  CPU, GPU, OS, RAM, hard drive?

    More specifically, what exactly is (or isn't) happening?  Are you saying that pressing Play does absolutely nothing?  Or does it play back, but maybe not smoothly?  More details are needed to help solve this problem.

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