Imovie Export

My IMovie won't allow me to export any files, or share them to my theater. Every time I try to do so I get a message like "Theater- my IMovie has failed" or "Exporting my Movie has failed" and gives me the link "com.apple.Compressor.CompressorKit.ErrorDomain error -1." when I click on details. I've cleared up 30g of data on my computer by deleting files in case that was the source of the problem but it hasn't made a difference and this happens to every video so I don't think this issue is due to the file being corrupt.