Warning: This will delete all your settings, pending shares and statistics.
To completely uninstall dslrBooth for Windows, follow these following steps:
Press Start Windows Button
Under textbox, paste: %appdata%\dslrBooth
Press Enter Delete the folders you see.
Uninstall dslrBooth from the Control Panel, Add/Remove Programs.
Download the latest version of dslrBooth from http://dslrbooth.com/download
Start dslrBooth and re-enter your registration information.