By nature of not being perfect, developers make mistakes and no program is without its bugs. As mentioned earlier, conditions which could cause errors should be anticipated and handled as much as reasonably possible. In those instances where there is nothing left to be done except show an error message, be helpful, polite, and as non-technical as possible.
Uh-oh... MyMP3Ripper couldn't create the playlist /boot/home/playlists/foo. This may have happened for a number of different reasons, but most often happens when making playlists on a non-BeOS drive, such as one shared with Windows. Certain characters, such as question marks and slashes cause problems on these disks. You may want to check the names of the artist, album, and songs for such characters and put a good substitute in its place or remove the character entirely.
MyApp can't copy your file to the disk because there isn't enough space for it. If you would like to copy it, move or delete files on the destination disk and try again.
MyApp didn't recognize the data in the file '/boot/home/foo'. It might not be a MyApp file or perhaps the file is corrupted.
(From a website):: O No! If you are reading this message, it means we have made a mistake. Don't worry, you can be sure that as you are reading this people are freaking out around here - testing circuits, rebooting systems, and even typing resumés (just kidding). Please try back in 5 minutes, as we still have plenty of great stuff.