Greetings, one method of deleting files in this situation is to use the Terminal window. The following method will allow you to delete files or folders:
2. Type in the following command: sudo rm --f. Leave an extra space after the end of the above command, following the "R." To delete a folder, type in "sudo rm --rf " without the quotes.
Drag and drop the appropriate file or folder onto the Terminal window and it should delete without further prompting.
"sudo rm –f" for files or "sudo rm –rf" for folders (without the quotes) Dan