Limewire's Launch button is only intended for multimedia files!!! Not for programs or other type of files! If you want to open a file that isn't a multimedia type then open it from the actual folder. Not from Limewire. Something I learnt today or the day or week before was this from LOTR: Using Library Explore button to access downld folder (click on link) Then open it. Use a can opener if necessary. If I'm really hungry I'll just use my teeth.