Path to installation is not set - Eclipse
You see this message in Eclipse when you try to launch an analysis and you haven't included your Klocwork User installation path in the Settings dialog.
Go to Window > Preferences > Klocwork > Settings.
In the Path to the User Klocwork installation, specify the path. For example, if you installed the Klocwork User package to the default location, your path would be the local drive with the most free disk space: