When I download a file from Cutrocket (zip File) and double click it to unzip (Mac Book) I get a folder with a string of letters and numbers, followed by another file with a string of letter and numbers then a folder with a light image of the vector file and Carbite create gives an error message can open the file. I suppose the file did not actualy down load of did not unzip correctely. Any help will be appricated!