deleting albums error

[haylz]

okay so completely without thinking i accidentally deleted pictures from my ftp which i didn't want to do, but now i keep getting an error. i know i'm not supposed to delete them because it causes a bunch of errors but can anyone help me as how to fix things??

this is the error i'm recieving.
Directory 'albums/4770/' is not writable, files can't be deleted 

[Nibbler]

Create that folder, then let Coppermine delete it.