I) I have this ValidationExpression in my Regular Expression Validator for uploading image files. ValidationExpression="^(([a-zA-Z]|(\\{2}\w+)\$?)(\\(\w[\w].*))(.jpg|.JPG|.gif|.GIF)$" But it did not prevent someone frombeing able to upload a jpg file with special characters in its name ^^^^^^^^^^^.jpg Howdo I change the above ValidationExpression to prevent file names having special characters being uploaded? II) The second related issue is now I am unable to delete this file even though I have FTP read/write access in Windows Explorer. Iget the message 'An error occured deleted the file or folder on the FTP server.Make sure you have permissions to access this folder. Details: 550^^^^^^^^^^^.jpg: The system cannot find the file specified. Any suggestions? Thank you.