[eclipse-dev] HELP can't compile anymore

[Ferrari Massimo <massimo.ferrari@xxxxxxxxx>]

"The project was not built since it is inconsistent. Ensure no other tool is
browsing the output directory, then try refreshing this project and
rebuilding it."

I refreshed the project many times, restarted eclipse, restarted the system,
... but can't compile anymore.

?
Thank you
Massimo