While attempting to upgrade my NWC 2 beta 1.02 -> beta 2.03, installation was halted with a message saying a proper installation could not be found. I had previously installed beta 1.02 into "C:\Program Files\Noteworthy Composer\". After reinstalling beta 1.02 into the default directory "C:\Program Files\Noteworthy Composer 2\", the upgrade installed just fine. This seems like a bug in the installer. It should check the registry for the correct install path rather than only checking the default path.
Thanks for the the great software and all your support! Scott