Hi Fanjogi , thank you for answering me. No:the movies I uploaded as "new element" were all SWF files: as I already said the operation succeeded some time but most of the times it fails. Besides I know perfectly that SWF movies are not visible in the preview screen: the problem is that when I save the created movie (wich should contain also the SWF movie which I inserted as new element) and upload it in my web filehosting, all other elements I added(as sounds, buttons etc.) are perfectly visible but not the SWF movie . I can understand that the SWF movie inserted in the movie that i created has not been uploaded in my web filehosting space even from the fact that dimensions of the file are too light