I have been using Prism Video Converter for a few days and yesterday it refuses to convert anything. I am using Windows Vista and first of all it seemed that Prism Video Converter worked perfectly converting all my files. Yesterday I couldn't convert any video's as it told me it was unable to create the output file, which has never been an issue before. I reinstalled it and I have the same issue, i don't understand what has changed, since it worked fine before. I am using the desktop to locate the input and output files. Any help at all would be appreciated.