/// <summary>
        /// Opens a new TFC file for writing
        /// </summary>
        /// <param name="randomizations"></param>
        /// <param name="dlcTfcName"></param>
        public static void StartNewTFCs(List <RTexture2D> randomizations)
        {
            ActiveBuilder = new TFCBuilder();
            ActiveBuilder.TextureRandomizations = randomizations;
            var dlcTFCPath = MERFileSystem.GetTFCPath(true);

            // DLC TFC
            ActiveBuilder.DLCTFCNameProp = new NameProperty(Path.GetFileNameWithoutExtension(dlcTFCPath), "TextureFileCacheName"); //Written into texture properties
            ActiveBuilder.DLCTFCGuid     = Guid.NewGuid();
            ActiveBuilder.DLCTFCGuidProp = StructProperty.FromGuid(ActiveBuilder.DLCTFCGuid, "TFCFileGuid");                       //Written into texture properties
            ActiveBuilder.DLCTfcStream   = new FileStream(MERFileSystem.GetTFCPath(true), FileMode.Create, FileAccess.ReadWrite);
            ActiveBuilder.DLCTfcStream.WriteGuid(ActiveBuilder.DLCTFCGuid);

            // PRELOAD TFC
            var bgTfcPath = MERFileSystem.GetTFCPath(false);

            ActiveBuilder.BGTFCNameProp = new NameProperty(Path.GetFileNameWithoutExtension(bgTfcPath), "TextureFileCacheName"); //Written into texture properties
            ActiveBuilder.BGTFCGuid     = Guid.NewGuid();
            ActiveBuilder.BGTFCGuidProp = StructProperty.FromGuid(ActiveBuilder.BGTFCGuid, "TFCFileGuid");                       //Written into texture properties
            ActiveBuilder.BGTfcStream   = new FileStream(bgTfcPath, FileMode.Create, FileAccess.ReadWrite);
            ActiveBuilder.BGTfcStream.WriteGuid(ActiveBuilder.BGTFCGuid);
        }