Im new to this software. But I have used it before and I have run into this warning(Make sure that your path/file has no string symbols like) and then it gose on to give examples of what not to use. Like I said Ive run into this warning and have had to change my file name and have had success. but these particular file still will not take. Ive tried just naming them file.avi. I still get the same warning. Ive tried using other files just to see if the program has a glich or something, but it works with other files just not these.