Netbeans 7.0.1 on Vista doesn't start after installing python plugin. How do I uninstall plugins manually?
Is there a command line argument to start netbeans without plugins? If not, this should be easy to add to netbeans :-)
I had the same issue. Here is how I solved it in 8.0.2 (without losing all settings and modules).
Go to 'C:\Users\yourAccount\AppData\Roaming\NetBeans\8.0.2\config\Modules' and delete the faulty (last installed plugin).
If you have several installed versions, have a look in their '\config\Modules' as well.
Start the Netbeans :)
Open Net Beans Plugin Manager From Tools => Plugins
Now go to Installed Plugin and right click on user installed plugin and then deactivate it.
that's all.
Try setting an alternate user directory:
netbeans.exe --userdir c:\temp\myTestHome\
If this works then something has gone wrong in your .netbeans folder in your user home directory.
Delete the %userhome%.netbeans directory, and everything should be as it was when you initially installed netbeans. Note that this will also remove all personal settings you may have made to netbeans.
来源：https://stackoverflow.com/questions/8413242/uninstall-a-netbeans-7-0-1-plugin-netbeans-doesnt-start