Choral Public Domain Library

I have recently uploaded three scores as Sibelius 4 files. Each time the system responded with a warning that the files may contain malicious code. I am quite sure that they do not. Wherefore the warning?

Hi Patterson, this warning is a standard message that the Wiki software displays for practically any file type different from the basic image and document types (jpg, gif, png, txt, pdf etc.). I've disabled the message as it is quite useless and misleading given CPDL's restricted scope of allowed file types. Thanks for informing us of this.