Can't use character device names in file names (Error 320)

From within Visual Basic, you can't give a file the same name as a character device driver. This error has the following cause and solution:

• You tried to use a file name such as AUX, CON, COM1, COM2, LPT1, LPT2, LPT3, LPT4, or NUL.

  Give the file another name.