Hi, I'm trying to sync from a non-user-directory to a USB-stick under Vista. If the newer file is in the PC-folder (C:\Program Files\ADC\Catalogs for example) it is copied to the USB-Stick without problem of course. But if the newer file is on the USB-stick, the copy to the folder fails ("Unknown error. Access denied (HRESULT: 0x80070005 (E_ACCESSDENIED))). There should be a UAC-prompt instead (or the possibility to run SyncToy as an administrator). Is there a solution to this?