Any users of Pro Tools systems that are having problems authorizing their D-Verb TDM, RTAS, or AudioSuite D-Verb plug-ins should download D-Verb 1.8.1This version is compatible with Pro Tools v5.1.x/5.2 TDM & Pro Tools LE v5.1.x/5.2.1It is avaialable at www.digidesign.com 1.8.1 is not compatable with Pro Tools FREE.With Pro Tools LE version 5.0.1 you will need a floppy to authorize the plug in, D-Verb. This floppy authorization key diskette should be included with your version of Pro Tools. If you did not receive this floppy, register the product and a back up floppy will be distributed to you. If you did not receive an authorization disk call technical support to confirm that you are registered.