MACROMEDIA FLASH 8-USING FLASH Use Manual page 76

Filenames and folder names that contain spaces and special characters often cause
problems when transferred to a remote site. Use underscores in place of spaces, and avoid
special characters in filenames and folder names wherever possible. In particular, colons,
slashes, periods, and apostrophes in filenames or folder names can cause problems.
If problems persist, try uploading with an external FTP program to find out if the
problem is specific to using FTP in Flash.
76 Working with Projects (Flash Professional Only)