I'm trying to see the interface design for JSF of a file. xhtml and the eclipse frawerok throw an error :

Could not open the Visual Page Editor:

org.eclipse.swt.SWTError: XPCOM error -2142109675

I'm using ubuntu 10.4 and eclipse helios.

I solved the problem by closing and restarting eclipse by terminal, typing:

$ sudo ./eclipse

The problem was caused because the eclipse's launcher don't had enough privileges.

Bye.