I have a cd of certifications tests and answer keys all in pdf files. I am having trouble making a back-up disc. I have tried CloneCD and BlindWrite. Whenever I attempt to open a copied file I get the error message "...is not a supported file type or has been damaged" (Acrobat). I also tried a pdf password remover program but it didn't detect any passwords on the files. Any help would be greatly appreciated.
I also tried to convert the pdf files to word documents but I wasnt successful with that either