I have a 32 GB USB Verbatim flash drive. I can not access some files on drive. I have removed and backed up all files I can open. One folder is complete jibberish: `æÆL4.'$í and the like for all the file names. When I attempt to open a file in that folder I receive the error message: "The operation can't be completed. An unexpected error occurred (error code -43) When I open other files that do work on this drive, I receive a message: "That the file is being modified by another user, Open as Read Only, or choose to Notify to be alerted when it is available." I can not change this drive or any of the files back to Read & Write. Anyone have any suggestions for data recovery. I have emailed WeRecoverData.com. Their price range is usually ranges between $250 and $1700. Are there less expensive options? Thank you!