When you try to install Navisworks, the installer lists Navisworks as already being installed, even though it is not. As a result, you cannot proceed and install Navisworks.
This problem can occur with Navisworks Manage 2010, Navisworks Manage 2009, Navisworks Review 2010, Navisworks Review 2009, Navisworks Simulate 2010 and Navisworks Simulate 2009.
An incomplete uninstall can sometimes leave residual registry keys that may cause the Navisworks installer to detect incorrectly that Navisworks has already been installed.
In order to resolve this issue, you must remove the following key from the Windows Registry:
Once completed, you can proceed with the installation.
Note: Problems caused by improperly editing the Windows Registry could render your computer operating system unusable. Microsoft provides a wealth of critical information that you need to know about the registry in the Microsoft Knowledge Base.
Please let us know should you come across this issue and be unable to resolve it.