Error message showing is :
The specified target component - nb-base/8.0.1.0.201408251540 was not found in the registry. The installer can continue as if the target component was specified. Click yes to continue, No to exit the installer.
I have tried a lot to uninstall my NetBeans8.0.2 but were unable. After lot of googling found out a solution. I think I should have and entry in stackoverflow.
Best way to remove Netbeans can be done using following steps
It works for me hope it will you too!